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Worksheets

Y9 Unit 2 Revision

Total questions: 163

Worksheet time: 3hrs 44mins

Name
Class
Date
1.

Match the following key terms to their definition

a)

Atomic Number

1.

The number of protons in the nucleus of an atom

b)

Mass number

2.

The total number of protons and neutrons in an atom's nucleus

c)

Electron shells/Energy Levels

3.

Regions around the nucleus where electrons are likely to be found

d)

Electronic structure

4.

Atoms of the same element with different numbers of neutrons

e)

Electrostatic forces

5.

the forces of attraction between particl

2.

What are the rows in the periodic table called?

a)

Rows

b)

Periods

c)

Groups

3.

In which group of the periodic table is magnesium?

a)

Group 1

b)

Group 2

c)

Group 3

d)

Group 4

4.

In which group of the periodic table is carbon?

a)

Group 1

b)

Group 2

c)

Group 3

d)

Group 4

5.

Which of the following is NOT a metal?

a)

Calcium

b)

Lithium

c)

Iron

d)

Sulfur

6.

Which part of an atom has a positive charge?

a)

Proton

b)

Neutron

c)

Electron

7.

Which part of an atom has a negative charge?

a)

Proton

b)

Neutron

c)

Electron

8.

Which part(s) of an atom contribute to most of its mass?

a)

Electrons

b)

Protons and electrons

c)

Protons and Neutrons

d)

Just the neutrons

9.

What does the atomic number tell you?

a)

The number of protons in an atom of a certain element

b)

The number of neutrons in an atom of a certain element

c)

The number of atoms in a certain element

10.

What does the relative atomic mass number tell you?

a)

The number of protons + neutrons in an atom of a certain element

b)

The number of electrons + protons in an atom of a certain element

11.

What is the atomic number of helium?

a)

2

b)

4

c)

6

12.

What is the atomic number of potassium?

a)

39

b)

19

c)

20

13.

True or False: The number of protons in an atom is the same as the number of electrons

a)

True

b)

False

14.

How many electrons in an atom of nitrogen?

a)

7

b)

14

c)

21

15.

Atoms of which element have the most protons?

a)

Hydrogen

b)

Magnesium

c)

Phosphorous

d)

Sodium

16.

Atoms of which element have 8 neutrons?

(remember, the relative atomic mass tells you the number of protons + neutrons)

a)

nitrogen

b)

oxygen

c)

fluorine

17.

Atoms of which element have 10 neutrons?

(remember, the relative atomic mass tells you the number of protons + neutrons)

a)

nitrogen

b)

oxygen

c)

fluorine

18.

What is the maximum number of electrons that can be in the inner most shell of an atom?

a)

1

b)

2

c)

8

19.

How many electrons would be in the outer shell of a carbon atom?

a)

2

b)

6

c)

4

d)

8

20.

Add the correct labels

a)mass number
b)atomic number
c)Chemical symbol
d)Name of element
1
2
3
4
1)
2)
3)
4)
21.

Carbon has an electronic configuration of 2,4. If you add these numbers together you get the total number of electrons which is ​ (a)   . The electron configuration 2,8,7 give us an total number of electrons of ​ (b)   so this element is ​ (c)   .

Choose from the below words
6
17
chlorine
16
sulfur
argon
18
15
phosphorus
22.

Reorder the following group 1 metals from least reactive to most reactive:

a)

Li

b)

Na

c)

K

d)

Cs

e)

Fr

1)
2)
3)
4)
5)
23.

Group 1 metals react the same way because...

a)

they all have 1 electron in their outer shell

b)

they all sound the same

c)

they are all the same size atoms

d)

they have the same total number of shells

24.

Group 1 metals all have one electron in their outer shell so they all become...

a)

+1 ions

b)

-1 ions

c)

+1 atoms

d)

-1 atoms

25.

Group 1 is also known as the ______ ______

(a)  

26.

The alkali metals become more reactive as you go down the group

As you go down the group you add another ​ (a)   of electrons each time.

So the ​ (b)   shell electrons get further from the positively charged ​ (c)  

This means the attraction between the outer shell electrons and the positive nucleus is ​ (d)   and the outer shell electron is easier to ​ (e)   .

Choose from the below words
shell
outer
nucleus
weaker
lose
gain
electrons
stronger
positively
negatively
27.

The alkali metals react with water to create metal hydroxide and hydrogen.

Match the following to describe the reactivity of Li, Na and K.

a)

Fizzes slowly

Floats

Moves slowly

1.

Lithium

b)
Fizzes quickly
melts into a ball
floats
moves quickly
2.

Sodium

c)

Fizzes very quickly

Melts into a ball

Floats

Moves very quickly

Burns with lilac flame

3.

Potassium

28.

Match the following reactions:

a)

lithium + water →

1.

lithium hydroxide + hydrogen

b)

sodium + water →

2.

sodium hydroxide + hydrogen

c)

potassium + water →

3.

potassium hydroxide + hydrogen

d)

to test for hydrogen...

4.

add a lit splint you will get a squeaky pop

e)

when potassium is added to water is ignites with a...

5.

lilac flame

29.

Match the following electron configurations:

a)

Na

1.

2,8,1

b)

Li

2.

2,1

c)

K

3.

2,8,8,1

30.

Which of these is NOT a physical property of the alkali metals?

a)

are soft and can be cut with a knife

b)

low density

c)

low melting point

d)

hard

31.
Question Image

Match the following:

a)

neutral subatomic particle

1.

neutron

b)

negative subatomic particle

2.

electron

c)

positive subatomic particle

3.

proton

d)

electrons

4.

have negligible mass

e)

protons or neutron

5.

have a relative mass of 1

32.

An atom is made up of three different subatomic particles. The protons have a ​ (a)   charge and the neutrons are ​ (b)   and both of these are found in the ​ (c)   . Electrons are ​ (d)   and are found in ​ (e)   around the nucleus.

Choose from the below words
positive
neutral
nucleus
negative
shells
33.

Add the labels to the diagram

a)neutron
b)proton
c)outer shell
d)shells
e)nucleus
f)electron
1
2
3
4
5
6
1)
2)
3)
4)
5)
6)
34.

Lithium and sodium both have 1 electron in their outer shell so are found in ​ (a)   . Carbon and silicon are both in group 4 because they both have ​ (b)   in their ​ (c)   . Fluorine and chlorine are both in ​ (d)   because they have 7 electrons in their outer ​ (e)   .

Choose from the below words
group 1
4 electrons
outer shell
group 7
shell
35.

Match the following to their correct group (Count the electrons in the outer shell)

a)
1.

Group 1

b)
2.

Group 7

c)
3.

Group 2

d)
4.

Group 4

36.

Match the following

a)

Numbers of electrons allowed in each shell?

1.

2,8,8

b)

Number of electrons able to fit in first shell?

2.

2

c)

Number of electrons able to fit in second shell?

3.

8

d)

Number of electrons in outer shell of 2,8,5?

4.

5

37.

An ion is an atom which has gained or lost ​ (a)   . Metals ​ (b)   electrons and ​ (c)   gain electrons. They do this to get a ​ (d)   stable outer shell. Group 1 elements will all lose their ​ (e)   outer shell electron and become +1 ions when they react.

Choose from the below words
electrons
lose
non-metals
full
one
38.

the name of group 1

(a)  

39.

the name of group 7

(a)  

40.

the name of group 8

(a)  

41.

What is the small, DENSE REGION consisting of protons and neutrons at the CENTER of an atom?

a)

Molecules

b)

Nucleus

c)

Subatomic particle

d)

Atoms

42.
True or False - Protons and Neutrons have about the same mass.
a)
True - They have about the same mass
b)
False - They do not have about the same mass
43.

At what part of the atom is the arrow pointing?

a)

nucleus

b)

energy level

c)

electron

d)

proton

44.

The mass of an atom is

a)

equal to the number of protons

b)

the protons + electrons

c)

the protons + neutrons

d)

the protons + neutrons + electrons

45.
How many protons does an O2 atom have?
a)
8
b)
24
c)
16
d)
When is lunch? 
46.

A certain atom has 26 protons, 26 electrons, and 30 neutrons. What is its mass number?

a)

26

b)

30

c)

52

d)

56

47.

Electrons can best be described as having a

a)

large size, positive charge.

b)

very small size, positive charge.

c)

large size, negative charge.

d)

very small size, negative charge.

48.

How many electrons are there in the highest energy level of a calcium atom?

a)

2

b)

8

c)

10

d)

6

49.

What is the electronic structure of chlorine?

a)

2,8,7

b)

2,7,8

c)

17

d)

278

50.

What shell represents the lowest energy level of an atom?

a)

The 1st shell

b)

The 3rd shell

c)

The 2nd shell

d)

The 4th shell

51.

The correct electron configuration for sodium is....

a)

2, 8, 2

b)

2

c)

2, 8

d)

2, 8, 1

52.

How many electrons are there in a phosphorus atom?

a)

15

b)

31

c)

16

d)

47

53.

Aluminium has 13 electrons. What is the electron configuration of aluminium?

a)

10.3

b)

2.8.3

c)

8.2.3

d)

13

54.

What is the chemical symbol for Chlorine?

(a)  

55.
Which elements have the most similar chemical properties?
a)
K and Na
b)
K and Ca
c)
K and Cl
d)
K and S
56.

The vertical (up and down) columns in the Periodic Table are called

a)

groups

b)

towers

c)

periods

d)

atomic numbers

57.
Arrangement of elements organized by atomic number
a)
Electron Cloud 
b)
Periodic Table 
c)
Electron Configuration
d)
None of these
58.

Is this the correct Bohr model for silicon (Si)?

a)

Yes

b)

No

59.

Is this the correct Bohr model for carbon (C)?

a)

Yes

b)

No

60.
What is the name of this element?
a)
Helium
b)
Hydrogen
c)
Argon
d)
Silver
61.

An atom has a full first energy level and 7 electrons in its second level. How many electrons does this atom have?

a)

2

b)

7

c)

9

d)

Need more information

62.

An atom has a full first and second energy level and 1 electron in its third level. This atom is neutral. What element is this atom?

a)

Potassium

b)

Argon (Ar)

c)

Magnesium (Mg)

d)

Sodium

63.

What atom does this Bohr Model represent?

(a)  

64.
An element with five valence electrons is
a)
phosphorus
b)
oxygen
c)
beryllium
d)
rubidium
65.
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
66.

What is the correct electron configuration for this bohr model?

a)

2,8,6

b)

8,8,2

c)

2,8,8

d)

8,8,8

67.

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

a)

2

b)

6

c)

8

d)

16

68.

Which element is this?

a)

Calcium

b)

Chlorine

c)

Silicon

d)

Potassium

69.

Which Element is this?

a)

Cobalt (Co)

b)

Nitrogen (N)

c)

Silicon (Si)

d)

Aluminum (Al)

70.

Which Element is this?

a)

Helium (He)

b)

Chromium (Cr)

c)

Carbon (C)

d)

Magnesium (Mg)

71.

Which Element is this?

a)

Vanadium (V)

b)

Boron (B)

c)

Sodium (Na)

d)

Magnesium (Mg)

72.

Which alkali metal is most reactive out of the following

a)

rubidium

b)

potassium

c)

sodium

d)

lithium

73.

How many electrons do the alkali metals have in their outer shell?

a)

1

b)

2

c)

8

d)

7

74.

What happens to the melting point of the alkali metals as you move down the group?

a)

decreases

b)

increases

75.

How does a group 1 metal atom form an ion?

a)

lose 1 electron

b)

lose 2 electrons

c)

gain 1 electron

d)

gain 2 electrons

76.

What is the charge of a group 1 metal ion?

a)

1+

b)

2+

c)

1-

d)

2-

77.

Which of the following is NOT a property of group 1 metals?

a)

More dense than water

b)

less dense than water

c)

low melting point

d)

soft

78.

Which alkali metal has the electron configuration 2.1?

a)

lithium

b)

potassium

c)

sodium

d)

rubidium

79.

Which alkali metal is the least reactive?

a)

lithium

b)

sodium

c)

potassium

d)

rubidium

80.

The largest atom in the alkali metal group belongs to ___.

a)

Li

b)

K

c)

Cs

d)

Na

81.

Is hydrogen an alkali metal?

a)

no

b)

yes

c)

maybe

82.

What element is this?

a)

Getium

b)

Tungsten

c)

I think I see hydrogen there...

d)

??Drawium??

83.

In what form can an ionic compound conduct electricity? [Select 2]

a)
when dissolved in water
b)
as a solid
c)
as a crystal
d)
when warmed slightly
e)

molten (liquid)

84.
Ionic bonds form between metals and ____.
a)
metalloids
b)
metals
c)
nonmetals
85.
What type of bond is this? Lithium with Fluorine?
a)
ionic
b)
covalent
86.

What is the the name of the ionic compound of lithium + chlorine?

(a)  

87.
What type of elements will form an ionic bond?
a)
Metals + Metals
b)
Nonmetals + Nonmetals
c)
Metals + Nonmetals
d)
None of the above
88.

The electrostatic force of attraction that holds together positive and negative ions is a(an):

a)

ionic compound

b)

ionic bond

c)

electrolyte

d)

crystal

89.
Which of the following is ionic?
a)
NO2
b)
MgO
c)
CO
d)
CH4
90.

Which one of these is an ion?

a)

Na

b)

Na+

c)

Cl2

d)

H2O

91.

What has happened to make Na+ a positive ion?

a)

Gained a positive proton from another atom

b)

Gained an electron

c)

Been charged up with electricity

d)

Lost an electron

92.

What has happened to make this chloride ion?

a)

Lost a positive proton from its nucleus

b)

Gained an electron

c)

Been charged up with electricity

d)

Lost an electron

93.

What type of structure do diamond and graphite have?

a)

Giant covalent structure

b)

Ionic structure

c)

Simple molecular structure

d)

Metallic structure

94.

How many covalent bonds does each carbon atom form in diamond?

a)

Six

b)

Four

c)

Two

d)

Three

95.

What makes diamond very hard?

a)

Hexagonal layers

b)

Regular tetrahedral network structure

c)

Delocalised electrons

d)

Ionic bonding

96.

Why does diamond not conduct electricity?

a)

Because it is a liquid at room temperature

b)

Because it has no free electrons

c)

Because it has a high melting point

d)

Because it has delocalised electrons

97.

Why can graphite conduct electricity?

a)

Because it has a high melting point

b)

Because it has ionic bonds

c)

Because it has delocalised electrons

d)

Because it is a metal

98.

What property makes graphite useful as a lubricant?

a)

Its hardness

b)

Its layers can slide over each other

c)

Its ability to conduct electricity

d)

Its high melting point

99.

How many covalent bonds does each carbon atom form in graphite?

a)

Two

b)

Five

c)

Four

d)

Three

100.

What is a common use for diamond due to its hardness?

a)

In batteries

b)

As a lubricant

c)

For conducting electricity

d)

For cutting tools

101.

How many covalent bonds does graphene make?

a)

5

b)

4

c)

2

d)

3

102.

Does diamond conduct electricity?

a)

Yes

b)

No

103.

Which pair of elements will MOST LIKELY form an ionic bond?

a)

neon and argon

b)

beryllium and lithium

c)

magnesium and sulfur

d)

phosphorus and oxygen

104.

Which of these BEST describes why an ionic compound is a good conductor of electricity while a covalent compound is a poor conductor of electricity.

a)

Ionic compounds form charged particles in solution, and electricity will only flow if charged particles are present.

b)

Covalent compounds form charged molecules in solution, and I mean covalent compounds are just that.

105.

NaCl, LiF, BeCl2

Do these compounds above require high temperatures to melt?

a)

Yes, because they are ionic bonds that have a strong force holding them together

b)

No, because they have weaker forces holding them together

c)

Yes, because they are covalent bonds

d)

No, because they melt easily

106.

The following properties are all characteristics of ionic compounds EXCEPT

a)

solid at room temperature

b)

soft

c)

crystal lattice structure

d)

conduct electricity when dissolved in water

107.

Which types of elements become cations?

a)

non-metals

b)

metals

c)

metalloids

108.
Nonmetals tend to 
a)
gain electrons
b)
lose electrons
109.

Ionic bonds could be best described as:

a)

A bond formed when 2 atoms share electrons

b)

A firm handshake

c)

An electrostatic attraction between oppositely charged ions

d)

An electrostatic attraction between anions

110.

Which type of bond is formed from the sharing of electrons?

a)

ionic bond

b)

covalent bond

111.

What set of elements is most likely to form a covalent compound?

a)

Na and O

b)

Na and K

c)

O and C

112.

Molten or dissolved compound conducts electricity.

a)

ionic compound

b)

covalent compound

113.

Which of the following describes covalent bonds?

a)

Bonds form because of opposite charges

b)

electrons are shared to fill outer electron shells

c)

Electrons are transferred between atoms

d)

Covalent bonds are magical

114.

Why do atoms form bonds?

a)

to increase their potential energy by filling up their valence shell

b)

to lower their potential energy by filling up their valence shell

c)

to increase their atomic number

115.
The reason that a sodium atom bonds with a chlorine atom is because
a)
Sodium transfers an electron to Chlorine
b)
oppositely charged ions form a strong electrostatic attraction
c)
ions are the same size
d)
the ions have a full outer shell
116.

Ionic compounds conduct electricity when dissolved in water. Which statement below best explains the property?

a)

Ions are free to move.

b)

Electrons are free to move.

c)

Bonds are strong.

d)

There are weak intermolecular forces of attraction.

117.
Which of the following is a property of an ionic compound?
a)
high melting point
b)
soft
c)
malleable
d)
liquid at room temperature
118.

A small group of atoms bonded covalently is called...

a)

a metallic lattice

b)

an ionic lattice

c)

covalent network

d)

covalent molecule

119.

Which structure will have low melting and boiling points?

a)

metallic lattice

b)

ionic lattice

c)

covalent molecular

d)

covalent network

120.

Do covalent compounds conduct electricity?

a)

Yes

b)

No

121.

Which line in the table shows the properties of a covalent network compound?

a)

A

b)

B

c)

C

d)

D

122.

Which line in the table shows the properties of an ionic compound?

a)

A

b)

B

c)

C

d)

D

123.

Which of the following diagrams can be used to show the structure of sodium chloride?

a)
b)
c)
d)
124.

The diagram shows a structure of a substance.

What is represented?

a)

diamond

b)

silica

c)

graphite

d)

ethane

125.

The diagrams show the structures of two forms, P and Q, of a solid element.


What are suitable uses of P and Q, based on their structures?

a)

use of solid P: drilling

use of solid Q: drilling

b)

use of solid P: drilling

use of solid Q: lubricating

c)

use of solid P: lubricating

use of solid Q: drilling

d)

use of solid P: lubricating

use of solid Q: lubricating

126.

Rescuers are drilling through fallen rock in order to rescue some men trapped in a cave. The drill needs lubricating from time to time.


The following statements were made about the materials used for the drill tip and the lubricant and the reasons for their use.


Which statements are correct?

a)

Diamond was used for the drill tip as it does not conduct electricity.

b)

Diamond was used for the drill tip as it is very hard.

c)

Graphite was used as the lubricant as it conducts electricity.

d)

Graphite was used as the lubricant as it is soft and flaky.

127.

Graphite is a form of carbon.

Why can graphite be used as a lubricant?

a)

Graphite contains delocalised electrons which move throughout the structure.

b)

Graphite contains weak covalent bonds so the atoms move easily.

c)

Graphite has a low melting point so it easily turns into a liquid.

d)

Graphite has weak forces of attraction between layers so they can move.

128.

Which statements are correct about diamond and graphite?

a)

They are different solid forms of the same element.

b)

They each conduct electricity.

c)

They have atoms that form four equally strong bonds.

129.

Which statement about graphite and diamond is correct?

a)

Diamond has a high melting point but graphite does not.

b)

Graphite and diamond both conduct electricity.

c)

Graphite and diamond both have giant structures.

d)

Graphite is ionic and diamond is covalent.

130.
Formulae of these might include H2O
each molecule contains 1 O and 2H atoms 
a)
simple covalent molecules
b)
metallic
c)
ionic
d)
giant covalent 
131.
What structure is shown in the diagram?
a)
Diamond
b)
Graphite
c)
fullerene
132.

What type of forces act between the ions in an ionic compound?

a)

Electrostatic

b)

Frictional

c)

Gravitational

d)

Magnetic

133.

Why is graphite so soft and slippery?

a)

It is made of layers of atoms

b)

It is made of small molecules

c)

It is an ionic compound

134.
Are these molecules also compounds?
a)
YES
b)
NO
135.
Are these molecules also compounds?
a)
YES
b)
NO
136.

Is this a molecule, compound or both?

O2

a)

Molecule

b)

Compound

c)

Both

137.

Is this a molecule, compound or both?

H2O

a)

Molecule

b)

Compound

c)

Both

138.

Is this a molecule, compound or both?

C12H22O11

a)

Molecule

b)

Compound

c)

Both

139.

Is this a molecule, compound or both?

P4

a)

Molecule

b)

Compound

c)

Both

140.

Is this a molecule, compound or both?

C3

a)

Molecule

b)

Compound

c)

Both

141.

Correct diagram for HF

a)
b)
c)
d)
142.

Correct diagram for CF4

a)
b)
c)
143.

Correct diagram for CO2CO_2  

a)
b)
c)
144.

Correct diagram for  N2N_2  

a)
b)
c)
d)
145.

Correct diagram for O2

a)
b)
c)
d)
e)
146.

Correct diagram for CaF2

a)
b)
c)
147.
Which of these is not a noble gas?
a)
Helium
b)
Argon
c)
Nitrogen
d)
Krypton
148.

Which of these electron configurations is not that of a noble gas?

a)

2

b)

2.8

c)

2.8.8

d)

2.7

149.

The reason that Noble Gases do not react is because

a)

Their outer electron shell is filled

b)

Their inner electron shell is filled

c)

They are able to bond to fill their outer shell

d)

None of the above, Noble Gases are highly reactive

150.
Another term for being chemically inactive is...
a)
Inert
b)
Inbert
c)
Insert
d)
Inmert
151.
How many elements are in the Noble Gas family?
a)
24
b)
13
c)
6
d)
18
152.

All Halogens are Toxic.

a)

True

b)

False

153.

Match the following electron configurations (Hint: Look at the outer shell!)

a)
1.

Group 2

b)
2.

Group 1

c)
3.

Group 7

d)
4.

Group 0

e)
5.

Group 4

154.

The nucleus of which halogen is best at attracting electrons?

a)

fluorine

b)

iodine

c)

bromine

d)

chlorine

155.

Which halogen is the most reactive?

a)

iodine

b)

chlorine

c)

bromine

d)

fluorine

156.

Which halogen is the least reactive?

a)

iodine

b)

chlorine

c)

bromine

d)

fluorine

157.

Which halogen has the biggest atoms?

a)

iodine

b)

chlorine

c)

bromine

d)

fluorine

158.

As you move down the group, halogens' reactivity...

a)

increases

b)

decreases

c)

doesn't change

d)

shows no trend.

159.

The atomic number and atomic mass of halogens:

a)

increase down the group

b)

decrease down the group

c)

remains constant

d)

none

160.

The melting and boiling points of halogens:

a)

decrease down the group

b)

increase down the group

c)

remain constant

d)

none

161.

Bromine is _____________ at room temperature.

a)

gas

b)

liquid

c)

solid

d)

none

162.

What is the name of an ionic compound with sodium and nitrogen?

(a)  

163.

What is the name of an ionic compound with magnesium + fluorine?

(a)  

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