GCSE Chemistry - OCR - Paper - 1- Exam Style Questions with Answers

Created on November 22, 2022 By

paruppts12

GCSE Chemistry OCR Paper-1 Set 1

1 / 15

Which is the best explanation of a concentrated acid?

The acid is completely ionised in solution in water.

The acid is partially ionised in solution in water.

There is a large amount of acid and a small amount of water.

There is a large amount of water and a small amount of acid.

2 / 15

Niels Bohr was involved in the development of the atomic model.
Which of these statements describes his work?

He developed the idea of a nuclear atom.

He developed the plum-pudding model of the atom.

He stated that atoms were like tiny solid balls.

He stated that electrons exist in fixed energy levels.

3 / 15

Sodium is an element that can be found in the Periodic Table.
A sodium atom contains 11 electrons.
Which statement about sodium is true?

Sodium is in Group 2 of the Periodic Table.

Sodium is in Period 2 of the Periodic Table.

Sodium is in Period 3 of the Periodic Table.

Sodium is in Group 3 of the Periodic Table.

4 / 15

A

B

C

D

5 / 15

16 g

32 g

50 g

64 g

6 / 15

Which of these substances has a giant covalent structure?

Carbon dioxide

Magnesium oxide

Sulfur dioxide

Silicon dioxide

7 / 15

Graphite is a form of carbon. Graphite can conduct electricity.
Why can graphite conduct electricity?

Delocalised electrons are between layers

The ions can move.

Layers have weak intermolecular forces.

Strong covalent bonds are between the carbon atoms.

8 / 15

A

B

C

D

9 / 15

What is the electronic structure of sulfur?

2

2, 6

2, 8, 6

2, 8, 8, 6

10 / 15

The accurate relative atomic mass of aluminium is 26.9815385.
What is this number to 5 significant figures?

26.98153

26.981

26.98154

26.982

11 / 15

A

B

C

D

12 / 15

Boron

Beryllium

Fluorine

Neon

13 / 15

A

B

C

D

14 / 15

A

B

C

D

15 / 15

A

B

c

D

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