Chapter 2 Matter And Change

Front 1

matter

Back 1

anything that has mass and takes up space.

Front 2

mass

Back 2

the mass of an object is the amount of matter the object contains.

Front 3

substance

Back 3

matter that has a uniform and definate composition. example table sugar because it is always 100% sucrose. It always has the same chemical composition. Also substances are pure substances when they contain only one kind of matter.

Front 4

physical property

Back 4

a quality or a condition of a substance that can be observed or measured without changing the substance's composition.

Front 5

Name the different types of physical properties.

Back 5

Physical properties include: 1. color, 2. solubility, 3. odor, 4. hardness, 5. density, 6. melting point, 7. boiling point.

Front 6

Name the physical properties of a solid

Back 6

solids: definate shape, definite volume, very slight expansion on heating, compressibility-almost incompressible.

Front 7

Name the physical properties of a liquid:

Back 7

Shape_Indefinate, Volume-definite, expansion on heating-moderate, compressibility-almost incompressible

Front 8

name the physical properties of a gas or vapor:

Back 8

Shape-indefinate, volume-indefinite,expansion on heatng-moderate, compressibility-readily compressible

Front 9

What is the reason for the differences in the physical properties in the three states of matter as far as the physical features are concerned?

Back 9

The particles of solids , liquids , and gas/vapor range from compact in solids to relatively far apart in gas.

Front 10

Can matter be changed without altering the chemical composition of the material?

Back 10

Yes, matter can be changed in many ways without changing the chemical composition of the material. when a change can be made without altering the chemical comosition it is called a physical change.

Front 11

Physical change

Back 11

a change that alters a given material but dos not alter the chemical composition.

Front 12

Name some examples of physical changes.

Back 12

examples of physical changesinclude: cutting, grinding, boiling, freezing, dissolving, cracking, melting, crushing, splitting and bending usually signify a physical change.