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.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Metals typically have high melting points and boiling points due to the strong metallic bonds.
Metals are good conductors of electricity and heat, allowing energy to flow easily through them.
Step 2
Give the name of the acid used to make chlorides.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The acid used to make chlorides is hydrochloric acid (HCl).
Step 3
Describe the test to show that the gas is hydrogen.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
To test for hydrogen gas, bring a lit splint near the mouth of the test tube containing the gas. If hydrogen is present, it will produce a 'pop' sound due to a small explosion with oxygen.
Step 4
Explain how the structure of a nickel atom, Ni, changes when it forms a nickel ion, Ni²⁺.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
When a nickel atom (Ni) forms a nickel ion (Ni²⁺), it loses two electrons from its outermost shell. This loss of electrons reduces the overall charge of the atom, resulting in a positively charged ion. The remaining electron configuration becomes more stable, resembling that of the nearest noble gas.
