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