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?
(b) Chlorine reacts with sodium to form sodium chloride.... 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?
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
The word equation for the reaction between chlorine and sodium is:
Chlorine + Sodium → 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 defined as a group of two or more atoms that are chemically bonded together. These atoms can be of the same or different elements. In the case of chlorine (Cl₂), it specifically consists of two chlorine atoms bonded together, which forms a diatomic molecule.
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 because it has free-moving electrons that can carry electrical charge. In solid form, sodium has a metallic structure where the outer electrons are delocalized, allowing them to move throughout the metal and transmit electrical current when a voltage is applied.
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!
