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GCSE Core Chemistry Revision Paper

This is a Core Chemistry Revision Paper for students doing Core Chemistry. It covers the following topics: Earth's atmosphere and rocks, oxidation and reduction.

'GCSE Core Chemistry Revision Paper' worksheet

Key stage:  KS 4

Curriculum topic:  GCSE Revision Papers

Curriculum subtopic:  Chemistry

Difficulty level:  

down

Worksheet Overview

QUESTION 1 of 10

This is a Core Chemistry Revision Paper for students doing Core Chemistry. It covers topics in Earth's atmosphere and rocks, oxidation and reduction.

It is believed that the atmosphere of the Early Earth was mainly ____________________.

oxygen gas

carbon dioxide

nitrogen gas

Where do scientists believe that most of the early Earth's atmospheric carbon dioxide was lost to?

What can too much oxygen cause to humans?

headaches

breathing problems

sickness

morning sickness

death

What is the main gas in the atmosphere today?

oxygen

nitrogen

carbon dioxide

argon

Select an example of a metamorphic rock.

granite

chalk

marble

In thermal decomposition limestone is broken down into carbon dioxide and _______________.

Complete the sentence by choosing the correct answer below.

 

calcium dioxide

calcium oxide

carbon monoxide

How can we detect carbon dioxide being given off in a reaction?

It makes a squeaky pop sound.

It re-ignites a lit splint.

It makes limewater cloudy.

What is a precipitate?

It is a soluble substance formed from the reaction of two insoluble substances.

It is an insoluble substance formed from the reaction of two insoluble substances.

It is an insoluble substance formed from the reaction of two soluble substances.

In what reaction are acids neutralised by alkalis?

Tick two indicators of pH conditions.

universal indicator

indigestion indicator

acid indicator

litmus paper/solution

How do indigestion remedies work?

They acidify the stomach.

They neutralise alkalis in the stomach.

They neutralise acids in the stomach.

Why are very strong acids dangerous?

They are toxic.

They are corrosive.

They are flammable.

How are compounds broken down into their elements during electrolysis?

with heat

with electricity

with alkalis

Select three options that apply to chlorine.

gas

liquid

yellow-green

brown

toxic

flammable

What are the products of the electrolysis of water? Tick two options.

oxygen gas

chlorine gas

steam

hydrogen gas

What is the scientific word for the process of getting a metal from a compound in a rock by a chemical reaction?

Name the element that when heating ores of metals in the lower reactivity series with, the metals are extracted from their ores.

What do we call the corrosion of iron?

What is the percentage of recycled lead used in the UK?

75%

50%

25%

Tick two properties of metals.

malleable

insulators

ductile

gases in room temperature

  • Question 1

It is believed that the atmosphere of the Early Earth was mainly ____________________.

CORRECT ANSWER
carbon dioxide
EDDIE SAYS
It is believed that he atmosphere of the Early Earth was mainly carbon dioxide.
  • Question 2

Where do scientists believe that most of the early Earth's atmospheric carbon dioxide was lost to?

CORRECT ANSWER
oceans
EDDIE SAYS
Scientists believe that most of the early Earth's atmospheric carbon dioxide was lost to the oceans.
  • Question 3

What can too much oxygen cause to humans?

CORRECT ANSWER
headaches
sickness
death
EDDIE SAYS
Too much oxygen can cause headaches, sickness and death.
  • Question 4

What is the main gas in the atmosphere today?

CORRECT ANSWER
nitrogen
EDDIE SAYS
78% of the Earth's atmosphere today is nitrogen.
  • Question 5

Select an example of a metamorphic rock.

CORRECT ANSWER
marble
EDDIE SAYS
Marble is a metamorphic rock.
  • Question 6

In thermal decomposition limestone is broken down into carbon dioxide and _______________.

Complete the sentence by choosing the correct answer below.

 

CORRECT ANSWER
calcium oxide
EDDIE SAYS
During thermal decomposition limestone (calcium carbonate) is broken down into carbon dioxide and calcium oxide.
  • Question 7

How can we detect carbon dioxide being given off in a reaction?

CORRECT ANSWER
It makes limewater cloudy.
EDDIE SAYS
Carbon dioxide turns clear limewater cloudy.
  • Question 8

What is a precipitate?

CORRECT ANSWER
It is an insoluble substance formed from the reaction of two soluble substances.
EDDIE SAYS
A precipitate is an insoluble substance formed from the reaction of two soluble substances.
  • Question 9

In what reaction are acids neutralised by alkalis?

CORRECT ANSWER
neutralisation
EDDIE SAYS
Acids are neutralised by alkalis in a reaction called neutralisation.
  • Question 10

Tick two indicators of pH conditions.

CORRECT ANSWER
universal indicator
litmus paper/solution
EDDIE SAYS
The universal indicator and litmus paper change colour according to acidic or alkaline conditions.
  • Question 11

How do indigestion remedies work?

CORRECT ANSWER
They neutralise acids in the stomach.
EDDIE SAYS
Indigestion remedies neutralise acids in the stomach.
  • Question 12

Why are very strong acids dangerous?

CORRECT ANSWER
They are corrosive.
EDDIE SAYS
Very strong acids are corrosive.
  • Question 13

How are compounds broken down into their elements during electrolysis?

CORRECT ANSWER
with electricity
EDDIE SAYS
During electrolysis electric current breaks down compounds into their ions.
  • Question 14

Select three options that apply to chlorine.

CORRECT ANSWER
gas
yellow-green
toxic
EDDIE SAYS
Chlorine is a yellow-green toxic gas.
  • Question 15

What are the products of the electrolysis of water? Tick two options.

CORRECT ANSWER
oxygen gas
hydrogen gas
EDDIE SAYS
Hydrogen and oxygen gas are produced by the electrolysis of water.
  • Question 16

What is the scientific word for the process of getting a metal from a compound in a rock by a chemical reaction?

CORRECT ANSWER
extraction
EDDIE SAYS
The process of getting a metal from a compound in a rock by a chemical reaction is called extraction.
  • Question 17

Name the element that when heating ores of metals in the lower reactivity series with, the metals are extracted from their ores.

CORRECT ANSWER
carbon
EDDIE SAYS
Metals in the lower reactivity series can be extracted from their ores when heating with carbon.
  • Question 18

What do we call the corrosion of iron?

CORRECT ANSWER
rusting
EDDIE SAYS
The corrosion of iron is called rusting.
  • Question 19

What is the percentage of recycled lead used in the UK?

CORRECT ANSWER
75%
EDDIE SAYS
75% of lead used in the UK is recycled.
  • Question 20

Tick two properties of metals.

CORRECT ANSWER
malleable
ductile
EDDIE SAYS
Metals are mainly solids in room temperature, malleable, ductile and good conductors of electricity and heat.
---- OR ----

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