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Chemistry Unit Review Questions2

Total questions: 53

Worksheet time: 37mins

Name
Class
Date
1.

Which of the following is a metalloid? A. sodium B. sulphur C. silicon D. strontium

a)

sodium

b)

sulphur

c)

silicon

d)

strontium

2.

What is a period in the Periodic Table?

a)

A. a vertical column

b)

B. a horizontal row

c)

C. a family of elements with similar properties

d)

D. a group of elements all of which have the same number of valence electrons

3.

What do the noble gases He and Kr have in common?

a)

The same number of electrons

b)

The same number of valence electrons

c)

Filled valence energy levels

d)

Both gases will make a balloon tend to float.

4.

What do the noble gases He and Kr have in common? Fill in the blank: _______

a)

A. The same number of electrons

b)

B. The same number of valence electrons

c)

C. Filled valence energy levels

d)

D. Both gases will make a balloon tend to float.

5.

How is the periodic table arranged? Fill in the blank: _______

a)

by atomic mass and chemical properties

b)

by ion charge and atomic mass

c)

by ion charge and atomic number

d)

by atomic number and chemical properties

6.

List any four types of information usually recorded on a periodic table in addition to the element's name.

4 lines
7.

What is a valence electron?

4 lines
8.

Which terms correctly describe CH₃COO⁻?

a)

A. I and II

b)

IV. compound

c)

I. ion

d)

III. polyatomic

e)

II. multivalent

9.

What is the name of the metal ion in Fe₂S₃?

a)

iron

b)

iron(II)

c)

iron(III)

d)

sulphide

10.

What is the name of PbS₂?

a)

lead sulphide

b)

lead(II) sulphide

11.

Fill in the blank: The name of PbS₂ is ______.

a)

lead sulphide

b)

lead(II) sulphide

12.

Write the name for V2O5.

4 lines
13.

Write the name for Cs2Cr2O7.

4 lines
14.

Which of the following is a highly ordered array of ions?

a)

ionic lattice

b)

reactant

c)

molecule

d)

ionic compound

15.

What is the starting material in a chemical reaction called?

a)

ionic lattice

b)

reactant

c)

molecule

d)

ionic compound

16.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
None of these
17.
What element is represented in this Bohr Model? 
a)
Carbon
b)
Hydrogen
c)
Aluminum
d)
Lithium
18.
What group does this element belong to?
a)
Group 1: Alkali metals
b)
Group 18: Noble Gases
c)
Group 2: Alkaline-Earth Metals
d)
Group 17: Halogens
19.
What is the center of the atom called?
a)
Orbital
b)
Nucleus
c)
Proton
d)
Electron shell
20.

What's a valence electron?

a)

electrons in the second orbital

b)

electrons in the outermost shell of an atom

c)

the atomic number

d)

electrons in the first energy level

21.

This Bohr diagram shows 3 orbits (shells) with electrons. To which row of the Periodic Table does it belong?

a)

1

b)

2

c)

3

d)

4

22.

Which row of the Periodic Table must this element come from?

a)

1

b)

2

c)

3

d)

4

23.

How many electrons total?

a)

5

b)

6

c)

7

d)

8

24.

How many valence electrons?

a)

2

b)

3

c)

4

d)

5

25.

Which period is this element in?

a)

1

b)

2

c)

3

d)

4

26.
What is the name of this element?
a)
Lithium
b)
Boron
c)
Carbon
d)
Neon
27.

Which element would be in group 16?

a)

V

b)

W

c)

X

d)

Y

e)

Z

28.

Which element would be in group 2?

a)

V

b)

W

c)

X

d)

Y

e)

Z

29.

This could be the dot diagram of

a)

Mg

b)

Cl

c)

C

d)

O

30.
How many dots would a Lewis Dot structure of Helium have?
a)
1
b)
2
c)
8
d)
0
31.
What element is this?
a)
Helium
b)
Hydrogen
c)
Argon
d)
Silver
32.

How many valence (outer) electrons does an Oxygen atom have?

a)

2

b)

6

c)

8

d)

16

33.

A __________ is a subatomic particle with a negative charge.

a)

proton

b)

neutron

c)

electron

d)

nucleus

34.

___________ simplify the Bohr Model by showing only the outer valence electrons used for bonding.

a)

Lewis Dot Diagrams

b)

Bohr Models

c)

Electron Clouds

d)

Periodic Tables

35.

Name this element.

a)

boron

b)

sodium

c)

magnesium

d)

lithium

e)

beryllium

36.

An electron is:

a)

Positively charged

b)

Negatively charged

c)

Neutral

37.

The atomic number of an element tells us:

a)

The number of protons

b)

The number of neutrons

c)

The number of protons plus neutrons

d)

The atomic mass

38.

An ice cube melting is an example of a:

a)

Physical change

b)

Chemical change

39.

Beryllium's atomic number is 4 and its atomic mass is 9. How many neutrons will a beryllium atom have?

a)

4

b)

5

c)

9

d)

13

40.

Which of these is NOT a physical property?

a)

Colour

b)

Melting Point

c)

Hardness

d)

Flammability

41.

In a Bohr-Rutherford Diagram, the innermost shell has a maximum of how many electrons?

a)

1

b)

2

c)

8

d)

18

42.

Soda with ice cubes is an example of a:

a)

Homogeneous mixture

b)

Heterogeneous mixture

c)

Element

d)

Compound

43.

Calcium's atomic number is 20. A calcium ion has a charge of +2. How many electrons does a calcium ion have?

a)

18

b)

20

c)

22

d)

40

44.

Where would you tend to find non-metals on the periodic table?

a)

In the left-most groups

b)

In the middle of the table

c)

In the right-most groups

d)

At the bottom of the table

45.

A rotting apple is an example of a:

a)

Physical change

b)

Chemical change

46.

Boron's atomic number is 5. How many valence electrons will a boron atom have?

a)

1

b)

2

c)

3

d)

5

47.

If an ion is positively charged, it is referred to as a:

a)

Anion

b)

Cation

48.

The charge of an ion is -3. This means the atom must have:

a)

Gained 3 protons

b)

Lost 3 protons

c)

Gained 3 electrons

d)

Lost 3 electrons

49.

Is solubility (ability to dissolve) a physical property or a chemical property?

a)

Physical Property

b)

Chemical Property

50.

A sulfur atom has 16 protons and 16 neutrons. What is its atomic mass?

a)

16

b)

24

c)

32

d)

48

51.

Fill-in-the-blank: Elements in the same ____________ have similar chemical properties.

a)

group

b)

row

c)

period

52.

Here is the Bohr-Rutherford diagram for a neutral Nitrogen atom. To have a completely filled outer shell, it will need to:

a)

Lose 3 electrons

b)

Gain 3 electrons

c)

Lose 5 electrons

d)

Gain 5 electrons

53.

Standard atomic notation includes:

a)

Element symbol

b)

Atomic mass

c)

Atomic number

d)

All of the above

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