Page 133 - Knowledge Organiser Yr8 24-25

Knowledge Base: Science 8.5 Reactivity Year 8
1. Metals + Oxygen
1.1
When a metal and oxygen react what do they form?
A metal oxide.
1.2
When a metal reacts with oxygen, what do we call this type of reaction?
Oxidation reaction.
1.3
Copper reacts with oxygen to form which compound?
Copper Oxide.
1.4
What is the word equation for the reaction between copper and oxygen?
Copper + Oxygen → Copper Oxide
1.5
Balance the symbol equation for the oxidation of copper and draw a particle diagram so show that no atoms have been lost or created during the reaction.
Cu + O2 → CuO
1.6
Which metal reacts more vigorously with oxygen, magnesium or iron?
Magnesium
2. Metals + Acid
2.1
When metals react with an acid, what two products do they form?
A salt + hydrogen
2.2
Give the general word equation for the reaction of a metal and an acid.
metal + acid → salt + hydrogen
2.3
What two things would you observe in a reaction between a metal and an acid?
1. Bubbles or fizzing.
2. Metal would get smaller as it is used up.
2.4
How could you prove that hydrogen gas is released in the reaction?
Insert a lit split into the reaction test tube and a squeaky pop sound is heard.
2.5
What are the rules for naming salts?
There are two parts to a salt name:
1. The first word is the metal.
2. The second word ends in ~ide or ~ate,
taken from the acid.
2.6
What ending will salts made from the following acids have:
a) Hydrochloric acid
b) Sulfuric acid
c) Nitric acid
A salt made from:
a) hydrochloric acid will end in chloride b) sulfuric acid will end in sulphate
c) nitric acid will end in nitrate
2.7
Write the word equation for the reaction between calcium and hydrochloric acid.
Calcium + Hydrochloric Acid → Calcium Chloride + Hydrogen
2.8
Write the word equation for the reaction between zinc and sulphuric acid.
Zinc + Sulfuric Acid → Zinc Sulphate + Hydrogen
2.9
Balance the symbol equation for the reaction between magnesium and hydrochloric acid. Draw particle diagrams to show that no atoms have been lost or created during the reaction.
Mg + HCl → MgCl2 + H2
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