1. Which one of these is least reactive?
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2. Which one is a property of a metal?
- High boiling point
- Poor conductor of electricity
- Easy to break
3. How many substances does a mixture contain?
- i dont know
- 2 or more
4. How many atoms does an element contain?
- more than 2
5. How does sound travel?
- Passing through things
- It's transmitted by particles vibrating
- Through our ears
- Through the air