Unit 1

Question 1

Chemistry

Answer 1

Study of matter and how it changes

Question 2

Matter

Answer 2

Anything with mass and takes up space

Question 3

Quantitative Data

Answer 3

Measurable

Question 4

Qualitative Data

Answer 4

Described

Question 5

Independent Variable

Answer 5

Only variable that changes

Question 6

Dependent Variable

Answer 6

Variable that does not change

Question 7

Accurate

Answer 7

Average of trials close to right answer

Question 8

Precision

Answer 8

How accurate your are. How close results of lab trials are to one another

Question 9

Accepted Value

Answer 9

Value accepted by science

Question 10

Percent error

Answer 10

How wrong you are

Question 11

Percent error equation

Answer 11

|error|/A.V x 100

Question 12

Substance

Answer 12

Matter that is always the same

Question 13

Element

Answer 13

Substance - Atoms bonded together (He) (Li)

Question 14

Compound

Answer 14

Substance - Elements bonded together in a fixed whole number ratio (H20)

Question 15

Extensive Properties

Answer 15

Physical property that changes based on amount of substance

Question 16

Intensive properties

Answer 16

Physical property that never changes

Question 17

Chemical properties

Answer 17

Undergoes change and what causes it to change

Question 18

Solid

Answer 18

Definite shape and volume. Low kinetic energy which attracts atoms not allowing them to move

Question 19

Liquid

Answer 19

Indefinite shape definite volume. Gained kinetic energy allowing atoms to move

Question 20

Gas

Answer 20

indefinite shape and indefinite volume. High kinetic energy allowing atoms to freely move

Question 21

Plasma

Answer 21

Most abundant state of matter. acts as solid and is charged like a gas

Question 22

Physical change

Answer 22

substance remains the same

Question 23

Chemical change

Answer 23

Substance changes into a new substance

Question 24

Law of conservation

Answer 24

Mass can not be created or destroyed. Atoms rearrange

Question 25

Mixture

Answer 25

Two or more substances mixed together. Physical change

Question 26

Heterogeneous Mixture

Answer 26

Mixture that is not evenly mixed

Question 27

Homogeneous Mixture (solution)

Answer 27

Evenly mixed together into one state of matter

Question 28

Alloy

Answer 28

Mixing of metals

Question 29

Filtration

Answer 29

Method of separating mixture. Separates based on size of solid and state size of matter

Question 30

Distillation

Answer 30

Separates based on boiling point