Chemistry Unit 1 Properties Of Matter Vocabulary

Front 1

Pure Substance

Back 1

Matter that always has exactly the same composition

Front 2

Element

Back 2

a substance that cannot be broken down into simpler substances

Front 3

Atom

Back 3

The smallest particle of an atom

Front 4

Compound

Back 4

A substance that is made from 2 or more simpler substances and can be broken down into those simpler substances

Front 5

Heterogeneous Mixture

Back 5

the parts of a mix that are noticeably different from another

Front 6

Homogeneous Mixture

Back 6

The substances are so evenly distributed that it's difficult to distinguish one substance in the mixture from another

Front 7

Solution

Back 7

When substances dissolve and form a homogeneous mixtures

Front 8

Suspention

Back 8

A heterogeneous mix that separates into layers overtime

Front 9

Colloid

Back 9

Contains particles that are medium in size between the small particles in a solution and the layer particles in a suspension

Front 10

Physical Property

Back 10

Any characteristic of a material that can be observed or measured without changing the substances in the material

Front 11

Viscosity

Back 11

The tendency of a liquid to keep from flowing

Front 12

Conductivity

Back 12

A materials ability to let heat flow

Front 13

Malleability

Back 13

Ability of a solid to be hammered without shattering

Front 14

Melting Point

Back 14

Temperatures at which a substance changes from solid to liquid

Front 15

Boiling Point

Back 15

Temperature at which a substance boils

Front 16

Hardness

Back 16

The ability of a material to be scratched, cut, or carved compared to another material

Front 17

Density

Back 17

The ratio of the mass of a substance to its volume

Front 18

Physical Change

Back 18

When some properties of a material change, but the substances in the material remain the same

Front 19

Chemical Property

Back 19

Any ability to produce a change in the composition of matter

Front 20

Flammability

Back 20

A materials ability to burn in the presence of oxygen

Front 21

Reaction

Back 21

How readily a substance combines chemically with other substances

Front 22

Chemical Change

Back 22

Occurs when a substance reacts and forms one or more new substances

Front 23

Precipitate

Back 23

Any solid that forms and separates from a liquid mixture