5 (a) State two characteristic properties of metals - Edexcel - GCSE Chemistry Combined Science - Question 5 - 2018 - Paper 1
Question 5
5 (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.
(c... show full transcript
Worked Solution & Example Answer:5 (a) State two characteristic properties of metals - Edexcel - GCSE Chemistry Combined Science - Question 5 - 2018 - Paper 1
Step 1
State two characteristic properties of metals.
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Answer
Characteristic properties of metals include:
Metals are good conductors of electricity, allowing the flow of electric current.
Metals have high melting and boiling points, meaning they remain solid at higher temperatures.
Step 2
Give the name of the acid used to make chlorides.
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Answer
The acid used to make chlorides is hydrochloric acid (HCl).
Step 3
Describe the test to show that the gas is hydrogen.
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To test for hydrogen gas, bring a lit match or a burning splint near the gas. If the gas is hydrogen, it will produce a characteristic 'pop' sound.
Step 4
Explain how the structure of a nickel atom, Ni, changes when it forms a nickel ion, Ni²⁺.
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When a nickel atom (Ni) forms a nickel ion (Ni²⁺), it loses two electrons from its outer shell. This loss of electrons results in a positive charge and changes the electron configuration, leading to a more stable structure, often resembling the electron configuration of the nearest noble gas.
