Vocab

Question 0

a tentative explanation for a set of observations

Answer 0

Hypothesis

Question 1

a systematic approach to research

Answer 1

Scientific Method

Question 2

a concise statement of a relationship between phenomena that is always the same under the same conditions.

Answer 2

Law

Question 3

a unifying principle that explains a body of facts and/or those laws that are based on them

Answer 3

theory

Question 4

anything occupying space and having mass

Answer 4

matter

Question 5

three states of matter

Answer 5

solid liquid gas

Question 6

change in the form of a substance, not in its chemical composition

Answer 6

physical change

Question 7

a given substance becomes a new substance or substances with different properties and different composition

Answer 7

chemical change

Question 8

____ have variable composition

Answer 8

mixtures

Question 9

having visibly indistinguishable parts; solution

Answer 9

homogeneous mixture

Question 10

having visibly distinguishable parts

Answer 10

heterogeneous mixture

Question 11

a quantitative observations consisting of two parts: number and scale/unit

Answer 11

measurement

Question 12

a digit that must be estimated is called _______

Answer 12

uncertain

Question 13

1.234 has ______ sig figs

Answer 13

4

Question 14

606 has ______ sig figs

Answer 14

3

Question 15

0.08 has ______ sig figs

Answer 15

1

Question 16

2.0 has ______ sig figs

Answer 16

2

Question 17

.0.00420 has ______ sig figs

Answer 17

3

Question 18

The answer to 4.51x3.7777 will have _____ sig figs

Answer 18

3

Question 19

The answer to 6.8/112.04 will have ______ sig figs

Answer 19

2

Question 20

89.332+1.1 will have how many numbers to the right of the decimal

Answer 20

1

Question 21

3.70-2.9133 will have how many numbers to the right of the decimal

Answer 21

2

Question 22

temperature: K=

Answer 22

C+273.15

Question 23

temperature: F=

Answer 23

C*(9/5)+32

Question 24

Density=

Answer 24

mass/volume