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Chemistry Semester I Final Review

Total questions: 70

Worksheet time: 4hrs 4mins

Name
Class
Date
1.

7,000 g = ____ kg

a)

70 kg

b)

700 kg

c)

7 kg

2.

68 cm = ___________ mm

a)

6.8 mm

b)

68 mm

c)

680 mm

3.

How would you write 0.0005 in scientific notation?

a)

50 x 10-5

b)

5 x 10-4

c)

5 x 103

d)

.5 x 103

4.

Which of the following numbers is written in scientific notation?

a)

20.35 x 104

b)

.2035 x 104

c)

2035 4

d)

2.035 x104

5.

Express the following in scientific notation:


.000457

a)

457 x 106

b)

457 x 10-6

c)

4.57 x104

d)

4.57 x 10-4

6.
Try to change the number back to standard form:  6.79  x  104
a)
679,000
b)
6,790
c)
67,900
d)
6,790,000
7.
How do you write
8.317 x 106
in standard form?
a)
8, 371, 000
b)
83, 170, 000
c)
837, 100
d)
8, 317, 000
8.
How many significant figures does the following number have: 0.002040
a)
6
b)
4
c)
3
d)
2
9.
How many significant figures does the following number have: 0.998005
a)
9
b)
10
c)
6
d)
5
10.
How many significant figures does the following number have: 100.3
a)
4
b)
3
c)
5
d)
2
11.
Round 0.010229 to four sig figs
a)
1022
b)
1023
c)
0.01023
d)
0.01022
12.
Round 1047.78 to three sig figs
a)
104
b)
105
c)
1050
d)
1050.00
13.
Ice turns into water then steam.  This is an example of 
a)
plasma
b)
production
c)
physical change
d)
chemical change
14.

A physical change is

a)

a change where the characteristics do not change the substance

b)

a change where the characteristics do change the substance

c)

a change where the chemistry changes

15.

A chemical change is when

a)

the chemical properties change

b)

the chemical properties do not change

c)

a change where the characteristics do not change the substance

16.

Cutting your hair is an example of a ___________ change.

a)

physical

b)

chemical

17.

Burning wood is a

a)

chemical change

b)

physical change

18.

Rotting fruit produces a bad smell. This happens because the fruit is experiencing a

a)

physical change

b)

chemical change

19.

All of these states of matter take the shape of their container EXCEPT:

a)

Liquids

b)

Solids

c)

Gases

20.

What is the change of state from a liquid to a gas called?

a)

Vaporization

b)

Freezing

c)

Sublimation

d)

Deposition

21.

What is the change of state of a solid directly to a gas called?

a)

Vaporization

b)

Sublimation

c)

Freezing

d)

Condensation

22.

What is the change of state from a liquid to a solid called?

a)

Freezing

b)

Boiling

c)

Melting

d)

Vaporization

23.

Which phase does NOT have a fixed volume or shape

a)

Soild

b)

Liquid

c)

Gas

24.

Is this image showing a homogeneous or a heterogeneous mixture? Image: Cesar salad

a)

homogeneous

b)

heterogeneous

25.

Is this image showing a homogeneous or a heterogeneous mixture? Image: Milk

a)

homogeneous

b)

heterogeneous

26.

Give an example of an extensive property.

a)

density

b)

volume

c)

mass

d)

temperature

27.

Provide an example of an intensive property.

a)

mass

b)

volume

c)

temperature

d)

pressure

28.

Which of the following is an intensive property?

a)

b) Length

b)

c) Pressure

c)

a) Volume

d)

d) Energy

29.

True or False: The amount of matter affects extensive properties.

a)

True

b)

Not always

c)

Only in certain cases

d)

False

30.
What two types of measurements make up DENSITY? 
a)
Mass and Volume
b)
Temperature and Mass
c)
Grams and Centimeters
d)
Volume and Weight
31.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
32.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons 
33.

How many neutrons does platinum have?

a)

78

b)

117

c)

195

d)

196

34.
What is the mass number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
35.

Atoms with the same identity but with different masses.

a)

ions

b)

isotopes

c)

isomers

d)

isoelectronic

36.

The periodic table is arranged by increasing ______ ______, which is equal to the number of protons.

a)

atomic mass

b)

atomic number

37.

The group number tells you the number of _______ ________.

a)

valence electrons

b)

energy levels

38.

Three types of nuclear radiation are _______ radiation, _________radiation, and _____________ radiation.

a)

alpha, beta, and gamma

b)

theta, beta, and kappa

c)

alpha, beta, positron

39.

In a(n) ___________, particles released from one nuclear reaction collide with other particles and cause more nuclear reactions.

a)

nuclear fission reaction

b)

nuclear fusion reaction

40.

In ___ _____reactions, small nuclei combine, producing a large nucleus and releasing large amounts of energy.

a)

nuclear fission

b)

nuclear fusion

41.

emitted helium nucleus

a)

positron

b)

radioactivity

c)

alpha particle

d)

gamma radiation

e)

beta particle

42.

Solve the nuclear decay reaction:

a)
b)
c)
d)
43.
Atomic radius generally increases as we move __________.  
a)
down a group and from right to left across a period 
b)
up a group and from left to right across a period 
c)
down a group and from left to right across a period 
d)
up a group and from right to left across a period 
44.
Which atom has the largest atomic radius?
a)
potassium
b)
rubidium 
c)
francium
d)
cesium
45.
Which of the following will have a higher electronegativity than arsenic (As)?
a)
Carbon (C)
b)
Neon (Ne)
c)
Antimony (Sb)
d)
Germanium (Ge)
46.
Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.
a)
decreases, increases 
b)
increases, increases
c)
increases, decreases 
d)
stays the same, increases
47.
What family is silver a part of?
a)
Transition Metals
b)
Noble Gases
c)
Alkali Metals
d)
Alkaline Earth Metals
48.

If an element is in group number 15 you know it has _____ valence electrons.

a)

1

b)

2

c)

5

d)

15

49.

Which of the following are examples of elements in the Alkali family?

a)

Ca, Be, Mg, Sr

b)

Al, Zn , Ag, Cd

c)

Ti, Fe, Cu, Co

d)

Li, K, Na, Rb

50.

Which of the following represent Halogens?

a)

Ne, He, Ar, Kr

b)

F, Cl, Br, I

c)

B, Si, Ge, As

d)

S, O, P, N

51.

Which group on the periodic table is generally known to be inert?

a)

Halogens

b)

Nonmetals

c)

Noble Gases

d)

Transition metals

52.

Which sequence of atoms demonstrates an increase in atomic radius?

a)

Na, Mg, Al, Si

b)

Cs, P, O, F

c)

Mg, Ca, Sr, Ba

d)

Ba, Sr, Ca, Mg

53.
Carbon dioxide
a)
C2O2
b)
C20
c)
CO
d)
CO2
54.
CO
a)
Carbon Oxide
b)
Carbon Oxygen
c)
Dicarbon dioxide
d)
Carbon Monoxide
55.
The chemical formula for an ionic compound of potassium and oxygen is
a)
KO.
b)
K2O.
c)
K2O2.
d)
KO2.
56.
What is the name of Ca(NO3)2
a)
calcium nitrite
b)
calcium II nitrate
c)
calcium nitrate
d)
carbon nitrate
57.
KOH
a)
potassium oxygen hydride
b)
potassium hydroxide
c)
potassium (I) hydroxide
d)
potassium monohydroxide
58.

When naming a transition metal, the numerical value of the charge is indicated by a …

a)

prefix

b)

suffix

c)

roman numeral following the name

d)

superscript after the name

59.
An ionic compound made of copper (Cu2+) and oxygen would be named
a)
copper oxygen.
b)
copper oxide.
c)
dicopper oxide.
d)
copper(II) oxide.
60.

How do covalent bonds form?

a)

Donating & receiving valence electrons between atoms

b)

Oppositely charged ions attract each other & form bonds

c)

Scientists are still not sure how they form

d)

Sharing valence electrons between atoms

61.

A(n) _________ is an ion with a positive (+) charge.

a)

anion

b)

cation

c)

ion

d)

solute

62.

if NONMETALS are more likely to GAIN electrons, they will form ...

a)

anions

b)

neutral atoms

c)

cations

63.

Does the following reference Polar, Nonpolar, or both:

"equal sharing of electrons"?

a)

Polar

b)

Nonpolar

c)

Both

64.
In a polar covalent bond, electrons are shared ___________.
a)
equally
b)
unequally
c)
between non-metals with similar electronegativities
d)
between a metal and a non-metal
65.

What is the molar mass of cyanide (CN-).

a)

13 g/mol

b)

24.02 g/mol

c)

26.02 g/mol

d)

42.02 g/mol

66.
What is the mass of 1.25 mol of Sn?
a)
14.839 g
b)
148.39 g
c)
0.011 g
d)
94.4 g
67.
What is the molar mass of AuCl3?
a)
96 g
b)
130 g
c)
232.5 g
d)
303.3 g
68.

85.0 g of NaOH is equal to how many moles?

a)

3400 moles

b)

45 moles

c)

0.47 moles

d)

2.1 moles

69.

Molecular Formula = C2F6

Choose the correct empirical formula.

a)

CF

b)

C2F6

c)

C3F

d)

CF3

70.
Which pair has the same empirical formula?
a)
NaCrO4 and Na2Cr2O7
b)
C2H4O2 and C6H12O6
c)
C3H6O3 and C2H6O2
d)
CH4 and C2H6

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