GCSE Chemistry - Atomic Structure - 5 - Exam Style Questions with Answers

Created on January 30, 2023 By

paruppts12

GCSE_EDE_CHE_1_ATOM_5

1 / 8

Why can graphite conduct electricity?

Graphite has strong covalent bonds

Graphite has a giant structure

Graphite has delocalised electrons

Graphite has layers of atoms that can slide over each other

2 / 8

Fullerenes are molecules made of carbon.
Fullerenes are increasingly used as catalysts due to their large surface area.
Give one other use of fullerenes.

Alloys

Lubricants

Fuel Cells

Polymers

3 / 8

Which statement about diamond is correct?

Each carbon atom is bonded to three others with strong covalent bonds

It has a giant structure and conducts electricity

It has a high melting point with each carbon bonded to four others

It is a hard substance with a low melting point

4 / 8

Covalent molecules can be displayed using a variety of diagrams and written formulae. Which of the following shows the number of non-bonding electrons present in a molecule?

Dot and cross diagrams

Ball and stick diagrams

Molecular formula

All of the above

5 / 8

Different substances have characteristic melting and boiling points, depending on the strength of the bonds or forces holding them together.
Which explains why methane has a lower melting point than sodium chloride?

Covalent bonds are weaker than ionic bonds

Covalent bonds are stronger than ionic bonds

Inter molecular forces are weaker than ionic bonds

Inter molecular forces are stronger than ionic bonds

6 / 8

Gallium oxide has a very high melting point. Gallium oxide does not conduct electricity when solid but does conduct electricity when molten.
What type of substance is gallium oxide?

metallic

ionic

giant covalent

simple molecular

7 / 8

Diamond is made of one element.
What is the name of that element.

cobalt

carbon

chromium

calcium

8 / 8

B

A

D

C

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