Exam 1

Question 1

Theory

Answer 1

Summarizes a hypothesis that has been supported by repeated experimentation and is valid as long as there is no evidence to disprove it

Question 2

Scientific Law

Answer 2

The statement of a natural phenomenon were no exceptions are known under the given conditions

Question 3

Pure substance

Answer 3

Definite, fixed composition and either an element or a compound

Question 4

Mixture

Answer 4

Combination of two or more pure substances

Question 5

Zeros are significant when

Answer 5

• Between nonzero digits (75.04)

- they are at the end of a number after a decimal point (33.140)

Question 6

Zeros are not significant when

Answer 6

• they appear before the first nonzero digit (0.00321)

- when they appear at the end of a number without a decimal point (6920)

Question 7

Mega

Answer 7

M
1,000,000
10^6

Question 8

Kilo

Answer 8

k
1,000
10^3

Question 9

Deci

Answer 9

d
0.1
10^-1

Question 10

Centi

Answer 10

c
0.01
10^-2

Question 11

Milli

Answer 11

m
0.001
10^-3

Question 12

Micro

Answer 12

Mue
0.00001
10^-6

Question 13

Nano

Answer 13

n
0.000000001
10^-9

Question 14

1 Meter equals

Answer 14

100 centimeters
1000 millimeters
3.28 Feet

Question 15

1 kilometer equals

Answer 15

1000 meters

100,000 centimeters

Question 16

1 inch equals

Answer 16

2. 54 cm

25. 4 mm

Question 17

Kilogram

Answer 17

kg
1000g
10^3 g
2.2015 pounds

Question 18

Gram

Answer 18

g
1g
10^0g

Question 19

Decigram

Answer 19

dg
0.1g
10^-1g

Question 20

Centigram

Answer 20

cg
0.01g
10^-2g

Question 21

Milligram

Answer 21

mg
0.001g
10^-3g

Question 22

Microgram

Answer 22

Mue g
0.00001
10^-6g

Question 23

Microgram

Answer 23

Mue g
0.000001 g
10^-6 g

Question 24

1 Liter equals

Answer 24

1000mL
1000cm^3
1.057 quarts

Question 25

Freezing point

Answer 25

0°C
32°F
273.15 K

Question 26

Boiling point

Answer 26

100°C
212°F
373.15 K

Question 27

Temperature equation

Answer 27

K=°C + 273.15

°F= 9/5(°C) + 32

Question 28

Density equals

Answer 28

Mass/Volume

Mass always grams
Vol always mL

Question 29

Periodic Table (1A)

Answer 29

+1

Alkaline Metals

Question 30

Periodic Table (2A)

Answer 30

+2

Alkaline Earth Metals

Question 31

Period Table (3A)

Answer 31

+3

Question 32

Period Table (5A)

Answer 32

-3

Question 33

Periodic Table (6A)

Answer 33

-2

Question 34

Periodic Table (7A)

Answer 34

-1

Halogens

Question 35

Periodic Table (8A)

Answer 35

Noble gases

Question 36

Diatomic Elements

Answer 36

Hydrogen- Have
Nitrogen- No 
Fluorine- Fear
Oxygen- Of
Iodine- Ice
Chlorine- Cold
Bromine- Beer

Question 37

Diatomic Elements (Hydrogen)

Answer 37

H
H2
Colorless gas

Question 38

Diatomic Elements (Nitrogen)

Answer 38

N
N2
Colorless gas

Question 39

Diatomic Elements (Oxygen)

Answer 39

O
O2
Colorless gas

Question 40

Diatomic Elements (Fluorine)

Answer 40

F
F2
Pale yellow gas

Question 41

Diatomic Elements (Chlorine)

Answer 41

Cl
Cl2
Greenish-yellow gas

Question 42

Diatomic Elements (Bromine)

Answer 42

Br
Br2
Reddish-brown liquid

Question 43

Diatomic Elements (Iodine)

Answer 43

I
I2
Bluish-black solid

Question 44

Ions (charged atoms)

Answer 44

Cation (+)

Anion (-)

Question 45

Physical Properties

Answer 45

Color
Taste 
Odor
State of matter 
Density 
Melting point
Boiling point

Question 46

Chemical properties

Answer 46

Reaction with another substance
Decompose
Form new substance

Question 47

Joule

Answer 47

Energy required to change the temperature of 1 g of water by 1°c

1 calorie= 4.184J
1kJ=1000J

Question 48

Specific heat equation

Answer 48

q=mC/\T

q is heat
m is mass
C is heat capacity
/\T is change in temperature

Question 49

Atomic Mass equation

Answer 49

(Atomic Mass • % abundance) + (Atomic Mass • % abundance) = amu