Chlorine is an element in group 7 of the periodic table - Edexcel - GCSE Chemistry - Question 6 - 2023 - Paper 2
Question 6
Chlorine is an element in group 7 of the periodic table.
(a) What name is given to group 7 of the periodic table?
(b) Chlorine reacts with sodium to form sodium chl... show full transcript
Worked Solution & Example Answer:Chlorine is an element in group 7 of the periodic table - Edexcel - GCSE Chemistry - Question 6 - 2023 - Paper 2
Step 1
What name is given to group 7 of the periodic table?
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
Group 7 of the periodic table is known as the halogens.
Step 2
Write the word equation for this reaction.
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
Sodium + Chlorine → Sodium Chloride
Step 3
Describe what is meant by the term molecule.
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
A molecule is a group of two or more atoms that are chemically bonded together. They can be of the same or different elements, and they represent the smallest unit of a chemical compound that retains its chemical properties.
Step 4
Explain how sodium conducts electricity.
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
Sodium conducts electricity through the movement of free electrons. In metallic sodium, the outer electrons are delocalized, allowing them to move freely throughout the structure, enabling electrical conductivity.
Step 5
Use this information to state the formula of sodium chloride.
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
