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Chemistry A Final Review

Total questions: 81

Worksheet time: 2hrs 48mins

Name
Class
Date
1.

Rows on the periodic table are called ___________.

a)

Periods

b)

Sentences

c)

Fences

2.

The columns in the periodic table are called ___________.

a)

Towers

b)

Herds

c)

Groups

3.
Which group of the periodic table is composed of inert (not reactive)  gases?
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
4.

Which color on the image of the periodic table corresponds with the alkaline earth metals.

a)

yellow

b)

dark blue

c)

red

d)

light blue

5.

Which color on the image of the periodic table corresponds with the transition metals.

a)

red

b)

black

c)

dark blue

d)

orange

6.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
7.

Elements in the same group or column have the same ...

a)

# of valence electrons

b)

# of shells

c)

# of protons

d)

Mass Number

8.
Which is a halogen?
a)
Helium
b)
Chlorine
c)
Oxygen
d)
Neptune
9.
Which is an alkali metal?
a)
Magnesium
b)
Iron
c)
Sodium
d)
Europium
10.

Who is known as the father of the periodic table?

a)

Bohr

b)

Einstein

c)

Mendeleev

d)

Moseley

11.

(a)   is a measure of how close measurements come to each other when they are made in the same way.

12.
a)

Student A

b)

Student B

c)

Student C

d)

Cannot be determined

13.

How close a measurement is to the accepted value is called (a)   .

14.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
15.

This bullseye demonstrates...

a)

High Accuracy & High Precision

b)

High Accuracy & Low Precision

c)

Low Accuracy & High Precision

d)

Low Accuracy & Low Precision

16.

A student's measured length during a science experiment was 12.00 cm. The actual size was 14.25 cm.


What was the percent error?


*Hint: You now know how to calculate error, and you should know how to calculate a percent, so put the two together to find this answer.

a)

15.79%

b)

18.75%

c)

2.25%

17.

Jessie estimates the weight of her cat to be 8 pounds. The actual weight of the cat was 10 pounds.


What was the percent error?


*Hint: You now know how to calculate error, and you should know how to calculate a percent, so put the two together to find this answer.

a)

15%

b)

20%

c)

25%

d)

30%

18.
How many electrons can each p orbital hold?
a)
6
b)
3
c)
2
d)
4
19.
How many d orbitals are there in a given sublevel?
a)
1
b)
3
c)
5
d)
7
20.
How many p orbitals are there in a sublevel?
a)
2
b)
1
c)
4
d)
3
21.
How many electrons can the d sublevel hold?
a)
8
b)
10
c)
2
d)
4
22.
How many total electrons can the f orbitals in a sublevel hold?
a)
2
b)
14
c)
6
d)
10
23.

How many neutrons are in an atom of carbon-14?

a)

6

b)

8

c)

10

d)

14

24.

How many protons does this isotope of titanium have?

a)

22

b)

26

c)

48

d)

70

25.

An element has three isotopes. Given the abundances and relative masses, calculate the average atomic mass and determine (from the periodic table) which element it is.


Abundances | Relative masses

0.005% | 234.04 amu

0.720% | 235.04 amu

99.275% | 238.05 amu

a)

Uranium (#92, Atomic Mass: 238.03 amu)

b)

Fluorine (#9, Atomic Mass: 19.00 amu)

c)

Mercury (#89, Atomic Mass: 200.59 amu)

d)

Polonium (#84 209 amu)

26.

How many valence electrons do atoms want to have in order to be stable?

a)

3

b)

1

c)

8

d)

4

27.

An atom that has gained or lost an electron is called a(n) _____.

a)

ion

b)

particle

c)

atom

28.

An ion is a charged particle that has more or less ______ than _____.

a)

electrons than protons.

b)

protons than electrons

c)

electrons than neutrons

29.

When ions LOSE electrons they become ____ charged.

a)

positively

b)

negatively

c)

same

30.

When ions GAIN electrons, they become _____ charged.

a)

postively

b)

negatively

c)

same

31.

Ionic compounds occur between:

a)

one metal and one non-metal

b)

one positively charged thing and one negatively charged thing

c)

two non-metals

d)

two metals

32.

Name the following compound:

a)

lithium oxygen

b)

lithium oxide

c)

lithium (II) oxide

d)

lithium (II) oxygen

33.

Draw the formula for: Magnesium phosphide

34.

Draw the formula for: Calcium fluoride

35.

The Olympic record for the high jump is just over 2.6 yards. What is that distance in feet? (3 ft = 1 yd)

a)

0.867 ft

b)

7.8 ft

c)

8.07 ft

d)

8.27 ft

36.

Americans drink 5,604,000 gallons of sweet tea each day. How many liters is that? (1 gal = 3.79 L)

a)

21,200,000 L

b)

21,239,160 L

c)

21,207,190.2 L

d)

21,000,000 L

37.

How many minutes are in a school year, 187 days?

a)

279,280 min.

b)

16, 200 min.

c)

16, 156 min.

d)

269,280 min.

38.

How many kilograms of calcium are there in 173 pounds of calcium? (1 lb = 454 g; 1 kg = 1000 g)

a)

1.10 kg

b)

78.5 kg

c)

110 kg

d)

78500 kg

39.

Differences between a chemical change and a physical change are

a)

The amount of mass left after a chemical change is smaller. The amount of mass left after a physical change remains the same.

b)

The amount of mass left after a chemical change is smaller than after a physical change AND a chemical change the energy change is large.

c)

A physical change is cutting, bending, tearing and a Chemical change could involve fire, high temperatures, or color changes or a new smell.

d)

All of the above answers are true.

40.

Do we eat and breath some elements, compounds, and chemical changes?

a)

Yes, because we eat cookies, salt, and breathe oxygen and drink H20. O is an element and cookies, salt, and H20 are compounds.

b)

No, we do not eat these things.

c)

Yes, because we eat chemicals and elements and compounds are chemicals.

d)

The correct choice is both number 1 and number 3.

41.

What are all the ways a physical change can occur?

a)

Freezing, steam, evaporation, change shape, bending, crushing, chopping, melting, drying clothes, eating metal

b)

A New Substance forms

c)

Mass decreases, new substance formed, chopping, evaporating

d)

None of these show evidence of a physical change

42.

Which choice shows evidence of a chemical change occuring?

a)

Mass is decreased, chopping

b)

Mass is decreased, new substance formed, large expenditure of energy, irreversible, gas bubbles, color change, smell.

c)

Chopping, evaporating, cutting, crunching, bending, tearing, freezing, melting, steam rising.

d)

None of these show evidence of Chemical Changes

43.
On a graph, which axis shows the independent variable?
a)
x-axis
b)
y-axis
c)
neither
d)
it changes
44.
Name the INDEPENDENT variable from the table below.
a)
words
b)
minutes
45.

Sophie earned $5 for every A she got on her report card.


m = money

A = A on report card


The dependent variable is:

a)

m = money

b)

A = A on report card

46.

What element matches this electron configuration?

1s22s22p63s2

a)

Neon

b)

Magnesium

c)

Aluminum

d)

Potassium

47.
What is this element? 
[Ar]4s2
a)
Calcium
b)
Sodium
c)
Scandium
d)
Titanium
48.

Red light has a wavelength of 675 x 10-9 m. What is its frequency?

a)

2.03x1011 m

b)

4.44x1014 Hz

c)

4.44x1014 nm

d)

2.03x1011 Hz

49.

Ground state means that an electron is...

a)

at its lowest possible potential energy

b)

in the first shell of an atom

c)

laying low for the weekend

d)

removed from an atom

50.
As you move down a group, atomic radius increases because - 
a)
you add more and more neutrons
b)
you add more and more protons
c)
you add more and more shells (energy levels)
d)
you add more atomic mass
51.
The atom with the largest atomic radius in Group 18 is - 
a)
Ar
b)
He
c)
Kr
d)
Rn
52.
As you move across the periodic table from left to right, the atomic radius decreases.  This is because - 
a)
the number of protons increases, so attraction to electrons increases
b)
the number of energy levels increases
c)
the number of electrons increases
d)
the atomic mass increases
53.
How many significant figures does the following number have?
0.00345
a)
6
b)
5
c)
3
d)
Ambiguous: 3,4,5, or 6
54.
How many significant figures does the following number have: 0.00204
a)
6
b)
4
c)
3
d)
2
55.

How many significant figures does the following number have?1.2500 x 10310^3  

a)
5
b)
3
c)

Ambiguous: 3 or 5

d)

7

56.

When using scientific notation, a negative exponent means ...

a)

the standard number is greater than one

b)

the standard number is less than one

c)

the negative sign doesn't have a meaning

d)

None of the above

57.

Convert this number to standard notation: 7.1 x 104

(a)  

58.

Convert this number to standard notation: 1.4 x 10-2

(a)  

59.

Convert this number into scientific notation: 950,000

a)

9.5 x 105

b)

9.5 x 10-9

c)

9.5 x 102

d)

None of the above

60.
What is the simplified version of
a)
3.9 x 106
b)
4 x 1020
c)
4 x 106
d)
3.9 x 1020
61.
Multiply:
(9.4 x 106)(3.2 x 105)
a)
30.08 x 1011
b)
3.8 x 101
c)
3.008 x 1012
d)
2.9375 x 101
62.
(9.6×103) × (6.7×102)
a)
64.32×105
b)
6.432×106
c)
64.32×106
d)
64.32×105
63.
Solve:
(6 x 106) / (2 x 103)
a)
12 x 103
b)
3 x 109
c)
1.2 x 104
d)
3 x 103
64.

Choose the formula for calculating percentage composition

a)
b)
c)
65.

Cane sugar is a white, odorless, crystalline powder with a sweet taste and the formula C12H22O11. what is the percentage composition of hydrogen in cane sugar?

a)

6.43%

b)

51.5%

c)

72.4%

d)

4.23%

66.

A Mixture is a combination of substances where the original substances keep their original properties

a)

True

b)

False

67.

A solution is a special mixture formed when one substance is _____________evenly throughout the other.

a)

Dissolved

b)

Disappearing

c)

Spread Out

d)

Put

68.

Water is the __________________ in the mixture.

a)

solute

b)

solvent

69.

A mixture with such small particles that you cannot see the individual particles.

a)

Suspension

b)

Sublimation

c)

Heterogeneous

d)

Homogeneous

70.

This word means "the same throughout".

a)

Homogeneous Mixture

b)

Heterogeneous Mixture

c)

Suspension Mixture

d)

Compound Mixture

71.

Which element is more reactive?

a)

Magnesium (Mg)

b)

Boron (B)

c)

Neon (Ne)

d)

Potassium (K)

72.

The groups on the Periodic Table are listed...

a)

Horizontally

b)

Vertically

73.

What is the total number of protons, neutron, and electrons in a Rhodium, Rh, atom?

a)

148

b)

45

c)

58

d)

275

74.

What decides an elements reactivity?

a)

It's proton count

b)

It's electron count

c)

An elements valence electrons

d)

The elements mass

75.

Which element is least reactive?

a)

Fluorine (F)

b)

Xenon (Xe)

c)

Hydrogen (H)

d)

Indium (In)

76.

Which is more reactive Helium (He) 2 or Florine (F) 9?

a)

Helium

b)

Florine

c)

they are roughly the same

77.
Which particle has a positive charge?
a)
electron
b)
orbital
c)
proton
d)
neutron
78.
Choose the particle that has no charge.
a)
nucleus
b)
neutron
c)
proton
d)
electron
79.
What is the mass of a proton and a neutron?
a)
1amu
b)
2grams
c)
13amu
d)
10cm
80.
An element with a mass number of 10 and an atomic number of 6 has how many protons?
a)
5
b)
8
c)
6
d)
10
81.
What is the mass number and name of an element with 8 protons and 8 neutrons?
a)
16 - Carbon
b)
16 - Oxygen
c)
24 - Oxygen
d)
8 - Neon

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