Free Printable Reactions Activate Year 7

Worksheets

Reactions Activate Year 7

Total questions: 20

Worksheet time: 26mins

Name

Class

Date

Acid + Metal --> ?

Salt + Water

Salt + Hydrogen

Salt

Hydrogen

Magnesium + sulphuric acid --> ?

magnesium sulfate + water

magnesium sulfate + hydrogen

magnesium chloride + hydrogen

magnesium chloride + water

Which metal is the least reactive out of: copper, magnesium, zinc and iron?

copper

magnesium

zinc

iron

Metals that react quickly/strongly with water and acids are called?

Reactive

Unreactive

Dangerous

Corrosive

When potassium reacts with sulphuric acid, what is the name of the salt produced?

Potassium Sulphide

Potassium Sulphur

Potassium Sulphuric

Potassium Sulphate

When a metal reacts with water what gas is produced?

Nitrogen

Carbon dioxide

Hydrogen

Helium

What are Chemical Reactions?

It's when you mix substances.

a process in which atoms rearrange to form new substances

When something bubbles.

letter and numbers showing the types and number of atoms

A teacher is demonstrating physical and chemical changes to her class. Which action should she use to demonstrate a chemical change?

cutting a piece of paper

folding a piece of paper

tearing a piece of paper

burning a piece of paper

Which equation correctly shows the displacement of copper by zinc?

copper + zinc sulphate --> copper sulfate + zinc

zinc sulphate + copper --> copper sulfate + zinc

copper sulfate + zinc --> zinc sulfate + copper

10.

Metals that react quickly/strongly with water and acids are called?

Reactive

Unreactive

Dangerous

Corrosive

11.

How can you test to show that when a metal reacts with water, hydrogen gas is produced?

Relights a glowing splint

A lit splint produces a squeaky pop

Puts out a burning splint

Is cold to the touch

12.

In chemistry, a displacement reaction is where

a more reactive metal displaces a less reactive metal from its compound

two reactive metals join together to form an alloy

a less reactive metal displaces a more reactive metal from its compound

a more reactive metal is removed from its compound by a less reactive metal

13.

When sodium reacts with hydrochloric acid, what is the name of the salt formed?

Sodium Hydride

Sodium Chloride

Sodium Hydrochloric

Sodium Chlorine

14.

When potassium reacts with sulphuric acid, what is the name of the salt produced?

Potassium Sulphide

Potassium Sulphur

Potassium Sulphuric

Potassium Sulphate

15.

The substances at the beginning of a chemical equation are called the ____

product

yield

chemical symbol

reactants

16.

An element is a substance that contains

only one type of atom

more than one type of atom

only one atom

only one type of particle

17.

Roughly how many elements exits naturally?

100

200

18.

Which one of the following is NOT physical property of a substance?

Boiling point (the temperature it boils at)

How well it conducts heat

Melting point (the temperature it melts at)

Whether it reacts easily with oxygen

19.

When a substance reacts with oxygen, the new substance formed is called

a sulfate

a hydroxide

an oxide

a chloride

20.

zinc + oxygen --> ?

zinc oxygen

zincide oxide

zinc oxide

oxyzinc

Reset

Reactions Activate Year 7

Total questions: 20

Worksheet time: 26mins

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