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43 Cards in this Set

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  • Back
What is a chemical change?
A change that that produces new substances.
What is a physical change?
A change that does not produce a new substance.
What is the formula for calculating density?
grams per cubic centimeter
(g/cm3)-solids
What are properties of Metals?
malleable,ductile,luster,great conducter of electricity and heat
What are properties of Nonmetals?
brittle,not malleable,not ductile,poor conductors of heat/electricity
What other separation techniques can be used to seperate mixtures?
filtering,decanting,chromatography
What are the two parts of a solution? Define both.
The solvent is the substance that does the dissolving,the solute is the substance that gets dissolved.
Define molecule.
The smallest particle of a substance that retains the properties of the substance and is composed of one or more atoms.
Define atom.
The smallest unit of matter
What is boiling point?
The temperature at which a liquid changes to a vapor.
What is melting point?
The temperature at which a solid material becomes a liquid.
What is matter?
Anything that has mass and occupies space.
What are valence electrons?
Electrons in the outermost shell of an atom. The electrons that are gained or lost in a chemical reaction.
What do group numbers have to do with valence electrons?
For main group elements, the number of Valence electrons equals the element's group number.
Where are protons located in an atom?
Located at the center of the atom in the nucleus. Neutrons are also located here.
Where are neutrons located in an atom?
Located at the center of the atom in the nucleus. Protons are also located here.
Where are electrons located in an atom?
Located outside of the nucleus.
What group is the element Calcium located?
Alkali Earth
What group is the element Lithium located?
Group: Alkali Met.
What group is the element Iron located?
Group: Trans. Met.
What group is the element Neon located?
Group: Noble Gas
Hint: The elements Xenon and Helium are also a part of this group.
What group is the element Chlorine located?
Group: Halogen
What group is the element Sulfur located?
Group: Non-Metal, Chalcogen
What group is the element Aluminum located?
Group: Metal
What group is the element Xenon located?
Group: Noble Gas
Hint: The elements Neon and Helium are also a part of this group.
What group is the element Helium
located?
Group: Noble Gas
Hint: The elments Xenon amd Neon are also a part of this group.
What group is the element Hydrogen located?
Group: Non-Metal
What information does the Periodic Table of elements provide to anyone studying chemistry?
The Periodic Table helps to predict chemical reactions. It is a helpful arrangement of the elements according to both their atomic number and the number of electrons in the outer orbit.
What is a "triple beam balance" used for?
A measuring insturment used to determine the mass of materials.
List examples of physical properties of matter.
color, smell, freezing point, boiling point, melting point infra-red spectrum, attraction (paramagnetic) or repulsion (diamagnetic) to magnets, opacity, viscosity and density.
Describe the pH Scale in terms of acids and bases.
1-6: acids
7: neutral
8-14: bases
Name the 5 parts of an atom. Write the electrical charge(if it applies)
Electron, Nucleus, Neutron, Proton, Orbit (Shell)
What is a chemical equation?
An equation that expresses a chemical reaction. The symbols on the left of the equation denoting the substances before, and those on the right those after, the reaction.
List an example of a chemical property of matter.
heat of combustion, reactivity with water, PH, and electromotive force.
Define pure substance.
Matter that contains only one chemical substance.
Define element.
A pure substance which cannot be broken down by further chemical techniques.
Define compound.
A pure substance composed of two or more different atoms chemically bonded to one another.
What is the difference between mixtures and compounds?
A mixtures have two or more substances mixed together without chemical changes, while compounds have two or more substances bonded together by chemical reaction.
In the following chemical equation, list the reactant(s:
NaCl + AgNO3
Sodium-Chlorine
In the following chemical equation, list the reactant(s:
AgCl+ NaNO3
Silver Nitrate
Which seperation technique would be best to use if you wanted to seperate a mixture of sand and salt?
Filtration
What is solubility?
A substance's ability to dissolve
What formula would you use to calculate the volume of a regular solid?
Length x Width x Height (l x w x h)