8 (a) State two characteristic properties of metals - Edexcel - GCSE Chemistry - Question 8 - 2018 - Paper 1
Question 8
8 (a) State two characteristic properties of metals.
Property 1
Property 2
(b) Acids are used to make salts.
Give the name of the acid used to make chlorides.
(... show full transcript
Worked Solution & Example Answer:8 (a) State two characteristic properties of metals - Edexcel - GCSE Chemistry - Question 8 - 2018 - Paper 1
Step 1
State two characteristic properties of metals.
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Answer
Metals typically have high melting points.
Metals are good conductors of electricity.
Step 2
Give the name of the acid used to make chlorides.
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Answer
Hydrochloric acid (HCl) is used to make chlorides.
Step 3
Describe the test to show that the gas is hydrogen.
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Answer
To test for hydrogen gas, apply a lit splint to the gas. If it is hydrogen, a characteristic 'pop' sound will be heard.
Step 4
Explain how the structure of a nickel atom, Ni, changes when it forms a nickel ion, Ni²⁺.
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Answer
When a nickel atom (Ni) forms a nickel ion (Ni²⁺), it loses two electrons. This loss results in a more positive charge, as the number of protons in the nucleus remains constant while the number of electrons decreases.
