Chemistry Chapter 3

Front 1

Matter

Back 1

Anything that takes up space and has mass

Hint 1

Space/Mass

Front 2

Mass

Back 2

The amount of matter in an object

Hint 2

matter/object

Front 3

Pure Substance

Back 3

Matter that has a uniform composition (H2O) and can’t be separated by physical means

Hint 3

uniform

Front 4

Mixture

Back 4

A physical blend of 2 or more pure substances (Salt water).
Can be separated by physical means

Hint 4

pure substances/physical

Front 5

Physical Properties

Back 5

Can be observed and measured without changing the substance.Ex. Density, color, odor, taste, hardness,melting point, boiling point.

Hint 5

observe/ w/o change

Front 6

Chemical Properties

Back 6

Ability of a substance to combine with or change into one or more substances.
Ex. heat of combustion, reactivity with water, PH, and electromotive force.

Hint 6

ability

Front 7

Extensive Properties

Back 7

A property that changes when the size of the sample changes.
Ex. Mass, length, volume

Hint 7

size of sample

Front 8

Intensive Properties-

Back 8

A property that doesn't change when you take away some of the sample. Ex. temperature, color, hardness, melting point, boiling point, pressure, molecular weight, and density.

Hint 8

doesn't change

Front 9

Solid-

Back 9

Mater that has definite shape and volume.

Hint 9

definite/definite

Front 10

Liquid-

Back 10

Matter that has definite volume but takes the shape of its container (flows).

Hint 10

definite/indefinite

Front 11

Gas-

Back 11

A substance without definite volume or shape and can flow to fill its container.

Hint 11

indefinite/indefinite/fills

Front 12

Vapor-

Back 12

A gas, but normally is a liquid or solid at room temperature (Water vapor)

Hint 12

gas ...

Front 13

Plasma

Back 13

High temperature ionized gas
Most common in the universe

Hint 13

temp/ion

Front 14

Physical changes

Back 14

A change that alters appearances, without changing the composition. Examples: Melting Ice, Bend a spoon,

Hint 14

appearance

Front 15

Chemical changes

Back 15

A change where a new form of matter is formed. Also called chemical reaction. Examples? rusting, explode, burn, rot, tarnish

Hint 15

New

Front 16

Conservation of Mass Law

Back 16

Mass can not be created or destroyed in ordinary (not nuclear) changes. All the mass can be accounted for. Mass at the start of a reaction (Reactants) = mass at end (Products)

Hint 16

created/destroyed

Front 17

Mixtures

Back 17

Made up of two or more pure substances. Variable composition. Mixtures can be Homogeneous or heterogeneous

Hint 17

substances

Front 18

Heterogeneous-

Back 18

A mixture that is not the same from place to place. (Chocolate chip cookie, gravel, soil).

Hint 18

uneven

Front 19

Homogeneous-

Back 19

A mixture that has the same composition throughout. (Kool-aid, air). Every part keeps its properties. A Homogeneous mixture is also referred to as Solution.

Hint 19

uniform

Front 20

Solution

Back 20

A Homogeneous mixture

Front 21

Filtration-

Back 21

Separates mixtures of solids from liquids with a physical barrier

Hint 21

separation

Front 22

Distillation-

Back 22

Separate a mixture by using the different boiling points.
Heat mixture- Catch vapor in cooled area- condense.

Hint 22

Boiling points

Front 23

Chromatography-

Back 23

Different substances are attracted to paper or gel, so they move at different speeds, thus separating.

Front 24

Crystallization-

Back 24

Separation technique that results in the formation of pure solid. (ex. Making rock candy).

Front 25

Elements-

Back 25

Simplest form of matter that can’t be broken down into simpler substances. Made-up of identical atoms (Ex. Na, Fe)

Hint 25

Simple

Front 26

Compounds

Back 26

A substance consisting of two or more different elements chemically bonded together in a fixed proportion.(ex. NaCl).
can be broken down by chemical methods
When they are broken down, the pieces have completely different properties than the compound. (Salt vs. Na or Cl)
Made of molecules- two or more atoms stuck together (H2O)

Front 27

Molecules-

Back 27

Two or more atoms joined togethe (H2O)

Front 28

Chemical Reactions

Back 28

Another name for chemical change
When one or more substances are changed into new substances.
Reactants- stuff you start with
Products- What you make
NEW PROPERTIES

Front 29

Chemical change

Back 29

Another name for chemical reaction
When one or more substances are changed into new substances.
Reactants- stuff you start with
Products- What you make
NEW PROPERTIES

Front 30

Indications of a chemical reaction

Back 30

Energy absorbed or released
Color change
Odor change
Precipitate- solid that separates from solution
Not easily reversed

Front 31

Precipitate

Back 31

A solid that separates from solution

Front 32

Chemical symbols

Back 32

Used to write chemical formulas. Subscripts tell us how many of each atom
H2O.s (He, Fe, etc.)
Each has a 1 or two letter symbol. First letter always capitalized second never (Pb)

Front 33

Mixture separation techniques

Back 33

By physical means, such as:
Filtration
Crystallization
Chromatography
Distillation

Front 34

Examples of Physical Properties

Back 34

Density, color, odor, taste, hardness,melting point, boiling point

Front 35

Example of a chemical property

Back 35

heat of combustion, reactivity with water, PH, and electromotive force.

Front 36

Most common state of matter in the universe

Back 36

Plasma

Front 37

Example of a physical change

Back 37

crushing a can, melting an ice cube, and breaking a bottle.

Front 38

Reactants

Back 38

Any substance that is directly involved in a chemical reaction.

Front 39

Products

Back 39

Any substance that is directly produced in a chemical reaction.