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138 Cards in this Set
- Front
- Back
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matter
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anything that has mass and volume
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elements
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all matter is composed of this, are substances that cannot be broken down into other substances, are made of only one type of atom, all known are listed in the periodic table, and each element is given a one or two letter symbol to represent it on the periodic table
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atoms
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the smallest part of an element and are considered to be the building blocks of matter
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compounds
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a substance made up of atoms of two or more elements combined chemically, when these atoms are joined to form these they get new properties, have certain ratios that must be followed and the smallest part of this is one molecule
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chemical formulas
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ley you know what is in one molecule of a compound, the number after the syimpol tellys you how many of that atom
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pure substances
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all elements and compounds: because they are made up of just one substance
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mixtures
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combinations of elements and compounds that are simply hanging out together and not chemically combined, they dont have a set ratio
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homogeneous
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when you mix two things together and it is uniform throughout and dissolve
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heterogeneous
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when you mix things together and you can clearly see different parts of the mixture, they arent uniform throughout
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element
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fluorine f2
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mixture
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sand and sugar
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compound
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baking soda NaCHO3
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element
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silver Ag
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mixture
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kool aid C6H12O6 H2O and flavor
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element are made of one type of atom while compounds are made of a combination of atoms of 2 or more elements
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what is the difference between compound and element
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a compound is a combination of elements that combine to form something new and have ratios while mixtures are combined elements and compounds that arent chem combined and can be taken apart to get the original
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what is the difference between compound and mixture
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physical property
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a property of matter that does not create a new substance when observed
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physical properties
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color shape mass hardness volume texture taste smell elasticity strength
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yes
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are changes of state physical properties
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use
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knowing the physical properties of a substance helps scientists determine a blank for that substance
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chemical properties
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a property of matter that results in a new substance when observed and shows how a substance reacts with others
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physical
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is magnetism a physical or chemical property
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chemical
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is rusting a chemical or physcial property
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flammability and reactivity
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examples of chemical properties
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chemical
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reacts w/ water
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physical
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is red
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physical
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melts easily
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physical
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boils at 100 degrees C
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chemical
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is nonflammable
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physical
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has a low density
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chemical
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tarnishes in moist air
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meter m
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unit of length
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grams g
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unit of mass
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seconds s
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unit of time
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kelvin K
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unit of temp
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milliliter mL or cubic centimeter cm3
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unit of volume
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kilo k thousand
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prefix and meaning of symbol k
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volume
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the amount of space a 3D object takes up
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cubic centimeter
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the unit for volume of a solid
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graduated cylinder
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waht do you measure the volume of a liquid whith
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Liter L or milliliter mL
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what is the base unit for liquid volume
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displacement method
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use when you have an irregularly shaped object and you need to find volume
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density
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a property of matter that describes the mass per unit volume of a substance
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mass to volume
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density relates blank to blank
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ratio
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density has a blank
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increase
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if i add more mass to an item without changing its volume, i blank its density
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direct relationship
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what is the relationship between mass and density
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volume
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when dealing with an object if you reduce the blank you increase the density
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decrease
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if you increase the volume you blank the density
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indirect
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what kind of relationship is there between volume and density
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less
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if you have two items with the same mass the one with blank volume will be more dens
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d=m/v
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what is the density formula
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m/dv
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magic circle formula
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g/mL or g/cm3
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units for density
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1g/mL
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what is the density of water
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physical change
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change that affects one or more physical properties of a substance without changing the identity of the substance
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physical change
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melting cutting crushing change in state dissolving
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chemical change
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happens when one or more substances are changed into entirely new substances that have different properties
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chemical change
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battery dying burning of a compound baked bread
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change in color production of gas change in properties new substance formed reaction precipitate giving off or absorbing heat
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what is some evidence of a chemical change
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atoms
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all particles are made of blank
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moving
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particles are always blank
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shape and volume and vibrate
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solids have a definite blank and blank. their particles are packed together closely and only blank from side to side
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absolute
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no solid has no movement unless it is at blank zero
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container definite volume more freely fluid
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liquids take the shape of their blank and their shape is not blank. they have definite blank. the particles of a liquid move blank than a solid but they are attracted to each other.they can be classified as a blank because it can spread
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container not volume fluids pressure
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gases take the shape of their blank. gases do blandk have a set of blank, they spread out to fill their container. gases are considered blank because they spread out. gases can exert blank on the walls because they move very quickly and often hit the walls of their container
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atoms particles
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all matter is made of blank and molecules that act like tiny blank
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faster
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the higher the temperature, the blank the particles move
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faster expand
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as the materieals are heated up the particles move blank. this makes the material blank
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slower contract
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as the materials are cooled the particles move blank. this makes the material blank
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o degrees C
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at what temp does ice melt
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0 degree C
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at what temp does water freeze
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100 degrees c
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at what temp does water vaporize
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100 degrees C
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at what temp does water condense
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move
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energy makes things blank
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melting
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s to l
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vaporization
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l to g
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sublimation
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s to g
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condensing
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g to l
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freezing
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l to s
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faster
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if the particles are moving blank after the change, they have gained energy
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mass
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the amount of matter in a substance
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density
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the amount of mass per unit of volume
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can help identify substances
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what is the use for density
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less dense
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what makes an object float
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mixture
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two or more substances chemically combined
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physically change
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how can a mixture be separated
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chemical change
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how can a compound be separated
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symbol
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abbreviation for an element
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a substance made of only one type of atom
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what is an element
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a substance made of 2 types of elements
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what is a compound
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kinetic theory of matter
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states that particles are always in motion and the higher the temperature the faster the particles move and at the same temperature, more massive particles move lslower than less massive particles
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vibrate
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what is the movement of a solid
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stay close, move freely
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what is the movement of a liquid
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move quickly anywhere
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what is the movement of a gas
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physical change
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a change which affects the physical form of a material but does not change its identity
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physical properties
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physical changes change what type of properties
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chemical change
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a change that produces a new substance
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chemical or physical properties
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chemical changes can change what type of properties
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physical properties
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physical changes use what type of properties
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mixtures
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physical changes can separate what
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physical changes
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how can physical changes be reversed
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chemical properties
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chemical changes use what properties
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compounds
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chemical changes separate what
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chemical changes
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chemical changes can only be undone by other what
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mass cannot be created or destroyed
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what does the conservation of mass say
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chemical changes can create a new substance but the mass of the original substance won't change
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how does the conservation of mass apply to chemical changes
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matter
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anything that has mass and takes up space is called
density volume energy matter |
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elements
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substances that cannot be broken down chemcially into other substances are
elements compounds mixtures liquids |
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definite volume and a definite shape
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a solid is a state of matter that has a
indefinite volume and an indefinite shape definite volume and a definite shape definite volume and an indefinite whape indefinite volume and a definite shape |
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elements
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the periodic table is a list of
compounds mixtures students elements |
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mixture
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in which of the following do the original substances keep their properties when they are mixed together
compounds bixture both compoounds and mixtures neither compounds or mixtures |
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compound
pure substances |
bubble in all of the words that describe pure water h2o
element compound mixture pure substance |
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homogeneous
mixture |
bubble in all of the words that describe salt water
pure substance compound mixture homogeneous heterogeneous |
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chemically
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a molecule of water is made from blank combining two hydrogen atoms and one oxygen atom
physically ionically thermally chemically |
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11
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the chemical formula for table sugar is c12h22o11. how many oxygen atoms are in each sugar molecule
2 11 12 22 |
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element
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h3 is an example of a
element compound mixture monkey |
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physical
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a propertyy of matter that does not create a new substance is
unchanging chemcial physical constant |
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reactivity
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which of the following is an example of a chemcial property
freezing point boiling point reactivity density |
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4.300kg
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maddie records the mass of4,300g ben says that the same number converted would be
4.300dg 4.300kg 4.300mg 4.300hg |
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cm
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which of the following is not a unit of volume
com l cm3 ml |
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mass
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4g is a measure of
mass volume density weight |
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a paper clip
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which is the most dense
a pillow air a paper clip a helium balloon |
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increase its mass
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you have a bowl full of pennies how can you increase its density
increase its mass decrease its mass |
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saome density
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you have 1000g of water and 10g of water which is more dense
1000g 10g can't tell same density |
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direct
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the relationship between mass and density
direct endirect opposite none |
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solid
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in which state of matter particles packed tightly together in fixed positions
gas solid liquid compound |
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are free to move within a container but remain in close contact with one another
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particles of a liquid
are tightly packed together and stay in a fixed position are free to move whereever they choose do not move in the container are free to move within a container but remain in close contact with one another |
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gas
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in which state of matter is the volume not definite
crystal liquid gas solid |
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freezing
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which term describes a liquid changing into a solid
freezing melting vaporizing condensing |
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the faster the particles move
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the kinetic theory states that as energy is added to particles of a substance
the faster the particles move the slower the particles move the particles will increase slightly in mass the substance will increase slightly in density |
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mixing a milkshake
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one example of a qhysical change is
burning paper baking cookies the rusting of iron mixing a milkshake |
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chemcial
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which type of change must occur to form or separate a compound
physical chemical both physical and chemial |
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the total mass of the wood and oxygen is the same as the total mass of the ash and gases
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you burn a log of wood and only a small pile of ashes is left what has happened
a small amount of mass has been lost a small amount of mass has been converted into a large amount of heat energy the total mass of the wood and oxygen is the same as the total mass of the ash and gases the total amount of energy is less than before |
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physical change
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cutting up quartz crystals to produce sand is an example of a
change of state chemical change chemical reaction physical change |
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melting
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bubble in all the changes that require adding energy
boiling condensing freezing melting |
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a chemcial change
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a change occurs in a substance which alters its chenical properties what type of change could have happened
a physical change a chamical change both physical and chemical monkeys |
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homogeneous mixture
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when salt is added to water and mixed thoroughly it becomes a
homogeneous mixture heterogenous mixture compound element |
