Unit 1 Chapter 2

Question 1

Quantitative

Answer 1

Require measurements

Question 2

Mass

Answer 2

Amount of matter measured in grams

Question 3

Volume

Answer 3

Amount of space and object occupies measured in liters, milliliters, and cubic centimeters

Question 4

Qualitative

Answer 4

Descriptions, not measured

Color, texture, odor, opaque clear, dense, sound, taste

Question 5

Substances

Answer 5

Pure composition

Question 6

First type of substance: element

Answer 6

Only one type of Atom, such as iron

Question 7

Second type of substance: compound

Answer 7

A combination of atoms such as iron oxide

Question 8

Mixtures

Answer 8

Contains two or more substances

Question 9

First type of mixture: homogeneous

Answer 9

The same throughout, dissolved

Question 10

Second type of mixture: heterogeneous

Answer 10

The sample may be different depending where you take it in the container

Question 11

Solid

Answer 11

Rigid shape, incompressible, fixed volume, usually particles tightly packed and organized

Question 12

Liquid

Answer 12

Indefinite shape but fixed volume, incompressible, flows, usually less tightly packed than solid, less organized

Question 13

Gas

Answer 13

Indefinite shape and volume, flows, particles far away from each other, disorganized, compressible

Question 14

Physical property

Answer 14

characteristics that describe a substance, can be observed without changing the substances composition

Question 15

Physical change

Answer 15

A change that does not affect the composition of the substance, the change may be reversible or irreversible

Question 16

Chemical property

Answer 16

Characteristics that refer to the ability to form new substances

Question 17

Chemical change or reaction

Answer 17

A change which produces new substances

Question 18

Chemical reaction

Answer 18

A change in which a new substance is formed

Question 19

Reactant

Answer 19

A starting substance

Question 20

Product

Answer 20

An ending substance

Question 21

Signs that a chemical reaction has occurred

Answer 21

Change in color, change in temperature, gas is produced, solid precipitate is formed, odor is produced

Question 22

Matter

Answer 22

Anything that has mass and volume

Question 23

Filtration

Answer 23

Separated solid from a liquid (passes through a filter)

Question 24

Distillation

Answer 24

Liquid is boiled to produce a vapor that is then condensed into a liquid