Across
- 5. – A reaction where elements switch places in a compound.
- 6. – A chemical reaction that involves oxygen and produces heat or light.
- 8. – A symbolic representation of a chemical reaction using formulas.
- 9. – The starting substance in a chemical reaction.
- 10. – A type of reaction where a compound breaks down into simpler substances.
Down
- 1. – A substance formed in a chemical reaction.
- 2. – A reaction where two or more substances combine to form a new compound.
- 3. – A process in which substances change to form new substances.
- 4. – A number placed before a chemical formula to balance an equation.
- 7. – A chart organizing all known elements by their properties.
- 11. – The measure of the amount of matter in an object.