C4 Chemical change

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Total cards: 24•Content version: v3•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

What is produced when metals react with oxygen?

Back (Answer)

A metal oxide

Front (Question)

HIGHER TIER What does OIL RIG stand for?

Back (Answer)

Oxidation Is Loss & Reduction Is Gain (of electrons)

Front (Question)

What is oxidation?

Back (Answer)

When a substance gains oxygen (HIGHER TIER or loses electrons)

Front (Question)

What is reduction?

Back (Answer)

When a substance loses oxygen (HIGHER TIER or gains electrons)

Front (Question)

What type of ions do metals form?

Back (Answer)

Positive ions

Front (Question)

What type of ions do non-metals form?

Back (Answer)

Negative ions

Front (Question)

Put these metals into order of reactivity from most to least reactive: copper, magnesium, lithium, calcium, iron, zinc, potassium and sodium

Back (Answer)

potassium, sodium, lithium, calcium, magnesium, zinc, iron and copper

Front (Question)

What is produced when a metal reacts with an acid?

Back (Answer)

A salt and hydrogen gas

Front (Question)

What is the test for hydrogen gas?

Back (Answer)

It burns with a squeaky pop

#10

Front (Question)

Name a metal that is found ‘natively’ in the ground

Back (Answer)

Gold / platinum

#11

Front (Question)

What is the name for a rock that contains enough metal to make it economic to extract it?

Back (Answer)

An ore

#12

Front (Question)

What is formed when a metal carbonate and an acid react?

Back (Answer)

A salt + water + carbon dioxide

#13

Front (Question)

What is formed when a metal reacts with water?

Back (Answer)

A metal hydroxide

#14

Front (Question)

What is formed when magnesium reacts with nitric acid?

Back (Answer)

magnesium nitrate + hydrogen gas

#15

Front (Question)

What is formed when lithium reacts with water

Back (Answer)

lithium hydroxide

#16

Front (Question)

What colour does universal indicator go in a strong acid?

Back (Answer)

Red

#17

Front (Question)

What colour does universal indicator go in a weak acid?

Back (Answer)

yellow or orange

#18

Front (Question)

What colour does universal indicator go in a neutral solution

Back (Answer)

green

#19

Front (Question)

What colour does universal indicator go in a weak alkali?

Back (Answer)

blue

#20

Front (Question)

What colour does universal indicator go in a strong alkali?

Back (Answer)

purple

#21

Front (Question)

Why can carbon be used to extract iron from its ore?

Back (Answer)

Iron is less reactive than carbon so carbon ‘steals’ the oxygen from the iron oxide

#22

Front (Question)

Give a word equation for the extraction of iron from iron oxide by carbon

Back (Answer)

iron oxide + carbon -> iron + carbon dioxide

#23

Front (Question)

What is formed when calcium reacts with sulfuric acid?

Back (Answer)

calcium sulfate + hydrogen

#24

Front (Question)

What is reduced in this reaction: iron oxide + carbon -> iron + carbon dioxide

Back (Answer)

The iron oxide is reduced (loses oxygen)