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Chemistry

Total questions: 17

Worksheet time: 9mins

Name
Class
Date
1.

What is ionic bonding?

a)

Strong forces of attraction between the lone pair of an oxygen, nitrogen or fluorine atom and an electron-deficient (delta positive) hydrogen.

b)

A strong electrostatic attraction between oppositely charged ions ( metal and non-metal)

c)

A strong electrostatic attraction between two nuclei and the shared pair(s) of electrons between them

d)

Delocalised electrons moving between positive metal ions in a regular layer structure.

2.

What is a dipole?

a)

The unequal distribution of charge leading to partial (delta positive / negative) charges

b)

The unequal distribution of charge leading to positive / negative charges

c)

Strong forces of attraction between the lone pair of an oxygen, nitrogen or fluorine atom and an electron-deficient (delta positive) hydrogen

d)

Delocalised electrons moving between positive metal ions in a regular layer structure.

3.

Where is relative atomic mass found?

4 lines
4.

How are moles of a substance calculated?

4 lines
5.

What is the relative molecular mass of methane CH 4?

4 lines
6.

The force between molecules is (a)   force

7.

What is the trend for atomic radius on the periodic table? ( a statement about periods and groups is required for the mark)

4 lines
8.

What is the Aufbau principle? Electrons fill shells and sub-shells in order of (a)   energy.

9.

What is covalent bonding?

a)

Strong forces of attraction between the lone pair of an oxygen, nitrogen or fluorine atom and an electron-deficient (delta positive) hydrogen.

b)

A strong electrostatic attraction between oppositely charged ions ( metal and non-metal)

c)

A strong electrostatic attraction between two nuclei and the shared pair(s) of electrons between them

d)

Delocalised electrons moving between positive metal ions in a regular layer structure.

10.
How many neutrons does a sodium atom have? (Use the image to help you)
a)
23
b)
11
c)
12
d)
34
11.
The electron configuration for an atom of potassium is:
a)
1s22s22p63s23p3
b)
1s22s22p63s23p6
c)
1s22s22p63s23p64s1
d)
1s22s22p63s23p64s2
12.
The ______________ yield is the maximum amount of product possible in a reaction. This determines the amount of product that should be produced in a perfect setting
a)
Percent
b)
actual
c)
stoichiometry
d)
theoretical
13.
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 
14.

What type of bonding occurs between a metal and a non-metal?

a)

Covalent

b)

Ionic

c)

Metallic

d)

Hydrogen

15.
What are the three types of strong chemical bonds?
a)
Metallic, Ionic and Covalent
b)
Metallic, Atomic and Electronic
c)
Ionic, Atomic and Nucelonic
d)
Covalent, Metallic and Electronic
16.
Which atom in an ionic bond loses electrons to become positively charged?
a)
Metal
b)
Non-metal
17.
What is the chemical formula of magnesium oxide? (Mg2+ and O2-)
a)
Mg2O2
b)
Mg2O2
c)
MgO
d)
MgO2