Group 7: The Halogens (OCR GCSE Chemistry A (Gateway Science Suite)): Quizzes
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12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the physical appearance of chlorine at room temperature?
What is the physical appearance of chlorine at room temperature?
Yellow-green gas
What colour is bromine at room temperature?
What colour is bromine at room temperature?
Orange-red liquid
What colour vapour does iodine produce?
What colour vapour does iodine produce?
Purple vapour
What happens to reactivity as you move down Group 7?
What happens to reactivity as you move down Group 7?
It decreases
What happens to melting point as you move down Group 7?
What happens to melting point as you move down Group 7?
It increases
How many electrons do Group 7 elements have in their outer shell?
How many electrons do Group 7 elements have in their outer shell?
7 electrons
Why does reactivity decrease down Group 7?
Why does reactivity decrease down Group 7?
Outer electrons further from nucleus
What is formed when a metal reacts with a halogen?
What is formed when a metal reacts with a halogen?
Metal halide
What colour are all metal halides (salts) formed from halogen reactions?
What colour are all metal halides (salts) formed from halogen reactions?
White solids
What is chlorine used for in drinking water and swimming pools?
What is chlorine used for in drinking water and swimming pools?
To kill bacteria
What is the formula of sodium chlorate(I), the bleach formed from chlorine?
What is the formula of sodium chlorate(I), the bleach formed from chlorine?
What is the key difference between an antiseptic and a disinfectant?
What is the key difference between an antiseptic and a disinfectant?
Disinfectant is stronger