Group 7Oxford AQA IGCSE Chemistry: Flashcards
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What is the common name for Group 7 elements?
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- What is the common name for Group 7 elements?
- The halogens
- Name four Group 7 elements.
- Fluorine, chlorine, bromine, iodine
- What charge does a halide ion carry?
- -1
- What type of compound is formed when a halogen reacts with a metal?
- An ionic compound
- What is meant by 'diatomic' when describing halogen molecules?
- Existing as molecules made of two atoms, e.g. Cl2
- What state is chlorine at room temperature?
- Gas
- What state is bromine at room temperature?
- Liquid
- What state is iodine at room temperature?
- Solid
- How do melting and boiling points change going down Group 7?
- They increase
- How does reactivity change going down Group 7?
- It decreases
- Which is more reactive: chlorine or bromine?
- Chlorine (higher up the group, so more reactive)
- What colour is chlorine gas?
- Pale green
- What colour is bromine liquid?
- Red-brown