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 are good conductors of heat and electricity.
Metals are malleable, meaning they can be hammered into thin sheets without breaking.
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, you can bring a lit splint close to the gas. If hydrogen is present, it will produce a 'pop' sound due to the combustion of hydrogen.
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
A nickel atom (Ni) has 28 electrons. When it forms a nickel ion (Ni²⁺), it loses two electrons from its outer shell. This loss of electrons results in a positively charged ion with a stable electron configuration similar to that of the nearest noble gas.
