Chem 103 - Comprehensive Final Exam

Front 1

matter

Back 1

anything that has mass and takes up space

i.e. atoms, molecules

Front 2

Matter is made up of _______.

Back 2

Matter is made up of ELEMENTS (atoms, molecules).

Front 3

Compounds are made up of _______.

Back 3

Compounds are made up of 2 OR MORE ELEMENTS.

Front 4

What is defined as a systemic way of observing, experimenting, and solving problems?

Back 4

Scientific method

Front 5

What are the 4 parts of the scientific method mentioned in class?

Back 5

Observation
Hypothesis
Experiments
Theory

Front 6

Are all nonzero numbers significant?

Back 6

Yes.

Front 7

Trailing zeros after a nonzero ____ significant.

i.e. 80
i.e. 7,700

Back 7

Trailing zeros after a nonzero are NOT significant.

i.e. 80 = 1 sig fig
i.e. 7,700 = 2 sig figs

Front 8

Leading zeros ____ significant.

i.e. 0.01
i.e. 0.00045

Back 8

Leading zeros are NOT significant.

i.e. 0.01 = 1 sig fig
i.e. 0.00045 = 2 sig figs

Front 9

Zeros trailing a nonzero # ____ significant.

i.e. 1.00
i.e .0200

Back 9

Zeros trailing a nonzero # ARE significant.

i.e. 1.00 = 3 sig figs
i.e 0.0200 = 3 sig figs

Front 10

Zeros trapped between nonzero #s _____ significant.

i.e. 4033

Back 10

Zeros trapped between nonzero #s ARE significant.

i.e. 4033 = 4 sig figs

Front 11

How many significant figures should you have for the following:

Multiplication/Division

Addition/Subtraction

Back 11

Multiplication/Division = The same # as the fewest sig figs

Addition/Subtraction = The same # as the fewest decimal places

Front 12

Rounding Rules

When do you round down or up?

81.15
81.25

Back 12

Round up when # preceding is ODD.

Round down when # preceding is EVEN.

81.15 = 81.2
81.25 = 81.2 [Do not go to 81.3]

Front 13

SI Units

Length
Mass
Temp
Time
Current

Back 13

SI Units

Length = Meters
Mass = Kilograms
Temp = Kelvin (K)
Time = Seconds
Current = Amps

Front 14

Identify the symbol and multiplier.

tera

Back 14

T (trillion)

1 x 10^12

Front 15

Identify the symbol and multiplier.

giga

Back 15

G (billion)

1 x 10^9

Front 16

Identify the symbol and multiplier.

mega

Back 16

M (million)

1 x 10^6

Front 17

Identify the symbol and multiplier.

kilo

Back 17

k (thousand)

1 x 10^3

Front 18

Identify the symbol and the multiplier.

deci

Back 18

d

1 x 10^-1

Front 19

Identify the symbol and the multiplier.

centi

Back 19

c

1 x 10^-2

Front 20

Identify the symbol and the multiplier.

milli

Back 20

m

1 x 10^-3

Front 21

Identify the symbol and the multiplier.

micro

Back 21

Greek letter "mu"; looks like "u"

1 x 10^-6

Front 22

Identify the symbol and the multiplier.

nano

Back 22

n

1 x 10^-9

Tip: nano=nine

Front 23

Identify the symbol and multiplier.

pico

Back 23

p

1 x 10^-12

Front 24

Identify the symbol and multiplier.

femto

Back 24

f

1 x 10^-15

Front 25

1 mm = ___ cubic cm

Back 25

1 mm = 1 cubic cm

Front 26

What is the formula to get from Fahrenheit to Celsius?

Back 26

F = (C)(9/5) + 32


Note: Solve for C to get C --> F

Front 27

How do you convert from Celsius to Kelvin?

How do you convert from Kelvin to Celsius?

Back 27

Add 273.15.


Subtract 273.15.

Front 28

Identify the mass #, atomic #, and # of neutrons.

Back 28

Mass # = 4
Atomic # = 2

Neutrons = 4-2 = 2

Front 29

atomic number

Back 29

number of protons in the nucleus of the atom.

Front 30

mass number

Back 30

number of protons and neutrons in the nucleus of the atom

*Should be larger than atomic # b/c it includes both protons and neutrons

Front 31

ionic compound

Back 31

a metal and one or more nonmetals bonded together

Front 32

What are the 3 states of matter?

Back 32

Solid
Liquid
Gas