Chapter 1

Question 1

What is a pure substance?

Answer 1

one arrangement of atoms or
molecules that cannot be physically separated.

Question 2

What is the difference between an element and a compound?

Answer 2

Element has only one type of atom and a compound has at least 2
different kinds
of elements

Question 3

Intensive properties

Answer 3

are independent of the
amount of the substance
that is present (Boiling point, density,
color, temperature, etc. Don’t need to memorize, just be aware.)

Question 4

Extensive

Answer 4

are dependent of the
amount of the substance
that is present. (EG mass, volume, energy, etc. Don’t need to memorize, just be aware.)

Question 5

Can physical changes be easily undone?

Answer 5

yes

Question 6

Can chemical changes be easily undone?

Answer 6

no

Question 7

What are the three main steps of the scientific method?

Answer 7

1) Observation
2) Making a hypothesis
3) Experimentation

Question 8

What is a scientific law?

Answer 8

A conceptual or mathematical statement about
what is observed in nature.
‒ Describes how nature behaves
‒ Cannot be violated; considered fact

Question 9

A scientific theory

Answer 9

is an
explanation of a law based on
experimental observations.
‒ Attempts to explain why a
natural phenomenon occurs
‒ Can never be conclusively proven

Question 10

deka

Answer 10

10 (da) (10^1)

Question 11

hecto

Answer 11

100 (h) (10^2)

Question 12

Mega

Answer 12

1,000,000 (M) (10^6)

Question 13

Deci

Answer 13

.1 (d) (10^-1)

Question 14

Micro

Answer 14

.000001 (u) (10^-6)
_________|

Question 15

Nano

Answer 15

.000000001 (n) (10^-9)

Question 16

Temperature

Answer 16

average kinetic
energy of particles that compose the matter

Question 17

F

Answer 17

= 9/5(C) + 32

Question 18

Cto F

Answer 18

C = 5/9(F − 32)

Question 19

1 m =

Answer 19

1 × 10^3 mm

Question 20

1 m =

Answer 20

1 × 10^6 μm

Question 21

A molecule is

Answer 21

2+ atoms in a specific geometric arrangement

Question 22

What figures are significant?

Answer 22

Nonzero, sandwich 0, trailing 0 (before and after decimal point), exact #, integral # from equation

Question 23

What numbers are not significant?

Answer 23

Leading zero

Question 24

What is the multiplication rule for SFs? (28)