Across
- 2. This type of reaction is easy to reverse.
- 4. Stays the same during a chemical reaction.
- 6. When two or more elements or compounds are together but not chemically combined.
- 7. Sometimes called a particle, the smallest thing something is made from.
- 8. A list of all the elements arranged in a specific way.
- 9. The type of reaction when something new is made and it's difficult to reverse.
- 10. When we write the chemical reaction with an arrow showing what reacts and what is made.
Down
- 1. Made of only one type of atom.
- 3. Two or more elements chemically combined.
- 5. Letters on the periodic table for the different elements.