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 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).
Step 3
Describe the test to show that the gas is hydrogen.
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Answer
Apply a lit splint to the gas. If the gas is hydrogen, it will produce a '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 loses two electrons to form a nickel ion (Ni²⁺), its electron configuration changes from 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁸ 4s² to 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁸. The loss of these two outermost electrons leads to a positively charged ion.
