Chapter 1

Question 0

Matter

Answer 0

Physical material of the universe, anything that has mass and occupies space

Question 1

Chemistry

Answer 1

The study of matter and the changes that matter undergoes

Question 2

Property

Answer 2

Any characteristic that allows us to recognize a particular type of matter and to distinguish it from other types

Question 3

Elements

Answer 3

Substances that cannot be decomposed into simpler substances, only composed of one kind of atom

Question 4

Atoms

Answer 4

Small building blocks of matter

Question 5

Gas

Answer 5

No fixed v or shape

Question 6

Liquid

Answer 6

Distinct v, no fixed shape

Question 7

Solid

Answer 7

Definite shape and volume

Question 8

Pure substance

Answer 8

Matter that has distinct properties and a composition that does not vary from sample to sample

Question 9

Compounds

Answer 9

Substances composed of 2 or more elements

Question 10

Heterogenous mixture

Answer 10

Diff composition throughout

Question 11

Homo mixture

Answer 11

Uniform throughout, solutions

Question 12

Physical properties

Answer 12

Can be observed w/o changing the Id and composition of a substance.
Color
Density
Melting pt
Boiling pt

Question 13

Chemical properties

Answer 13

Describe a way a substance reacts to form other substances

Question 14

Intensive properties

Answer 14

Do not depend on amount, density, temp

Question 15

Extensive properties

Answer 15

Depend on amount of sample, mass and volume

Question 16

Physical change

Answer 16

Changes physical appearance but not composition, changes of state

Question 17

Chemical change

Answer 17

A substance is transformed into a chemically diff substance, reactions

Question 18

Mass

Answer 18

Measure of the amount of material in an object

Question 19

Kelvin

Answer 19

K= C + 273.15

Question 20

Temp

Answer 20

C= 5/9 (F-32)
F= 9/5(C) +32

Question 21

Density

Answer 21

Mass/volume

Question 22

Precision

Answer 22

Measure of how closely individual measurements agree with one another

Question 23

Accuracy

Answer 23

How close the number agrees to correct value