The Periodic Table (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
How many electrons do halogens have in their outer shell?
How many electrons do halogens have in their outer shell?
7
Which halogen is the most reactive?
Which halogen is the most reactive?
Fluorine
How do halogens exist as molecules?
How do halogens exist as molecules?
Pairs of atoms
What charge do halide ions have?
What charge do halide ions have?
-1
What happens to reactivity as you go down Group 7?
What happens to reactivity as you go down Group 7?
Decreases
What happens to melting points as you go down Group 7?
What happens to melting points as you go down Group 7?
They increase
How does Group 7 reactivity trend compare to Group 1?
How does Group 7 reactivity trend compare to Group 1?
Opposite trend
What type of compound do halogens form when they react with metals?
What type of compound do halogens form when they react with metals?
Ionic
In displacement reactions, which halogens can displace others?
In displacement reactions, which halogens can displace others?
More reactive ones
Which halogens can chlorine displace?
Which halogens can chlorine displace?
Bromine and iodine
Which halogen can bromine displace?
Which halogen can bromine displace?
Iodine only
What colour appears when chlorine displaces iodine from potassium iodide?
What colour appears when chlorine displaces iodine from potassium iodide?
Brown