Question 1

What is an acid?

Accepted Answer

A substance that produces H⁺ ions when added to water

Answer

A soluble base

Answer

A substance that will neutralise an acid

Answer

A chemical which changes colour when added to acids and alkalis

Question 2

What is an alkali?

Accepted Answer

A soluble base

Answer

A substance that will neutralise an acid

Answer

A chemical which changes colour when added to acids and alkalis

Answer

A substance that produces H⁺ ions when added to water

Question 3

A substance with a pH of 6 is...

Accepted Answer

a weak acid

Answer

neutral

Answer

a strong acid

Answer

a weak alkali

Question 4

Pick the correct equation for the reaction between hydrochloric acid and iron oxide.

Accepted Answer

Hydrochloric acid + solid iron (III) oxide &#x2192; iron (III) chloride solution + water

Answer

Sulphuric acid + iron (III) oxide &#x2192; iron (III) chloride solution + water

Answer

Hydrochloric acid + iron (III) oxide &#x2192; iron (II) chloride solution + water

Answer

Hydrochloric acid + iron (III) oxide &#x2192; iron (III) chlorate solution + water

Question 5

We can react an acid and an alkali together to produce a salt. The correct name for this type of chemical reaction is...

Accepted Answer

neutralisation

Answer

thermal decomposition

Answer

oxidation

Answer

combustion

Question 6

When an acid and an alkali react, a salt and water are formed. Pick the correct salt produced when ammonium hydroxide reacts with nitric acid.

Accepted Answer

Ammonium nitrate

Answer

Ammonium phosphate

Answer

Ammonium chloride

Answer

Ammonium sulphate

Question 7

Salts can also be made by reacting metals with acids. What gas is given off when a metal reacts with an acid?

Accepted Answer

Hydrogen

Answer

Nitrogen

Answer

Carbon dioxide

Answer

Oxygen

Question 8

Precipitation reactions occur when an insoluble salt is formed. Precipitation reactions can be used in industry to...

Accepted Answer

remove some substances from waste water

Answer

split large molecules into smaller ones

Answer

remove metals from their ores

Answer

remove unwanted impurities from metals

Question 9

A strong acid...

Accepted Answer

is 100% ionised in water

Answer

turns universal indicator paper green

Answer

has a high pH number

Answer

is partially ionised in water

Question 10

Pick the correct combination of definitions.

Accepted Answer

Acid - proton donor<BR>
Alkali - proton acceptor

Answer

Acid - proton giver<BR>
Alkali - proton donor

Answer

Acid - proton acceptor<BR>
Alkali - proton acceptor

Answer

Acid - proton acceptor<BR>
Alkali - proton donor

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