Across
- 2. -chemical reaction in which heat is released to the surroundings
- 5. -__________ reaction is a chemical change in which a single compound is broken down into two or more simpler products
- 8. -_______ ________ reaction is a reaction in which one element takes the place of another element in a compound
- 9. -chemical reaction that requires heat
- 12. -_______ ________ reaction is a reaction in which the ions of two compounds exchange places in an aqueous solution to form two new compounds
- 13. -__________ reaction a chemical reaction in which two or more substances react to yield a single product
- 15. -__________ energy is needed to get a reaction started
- 16. -chemical ________ shows the elements in the compound and the ratio of atoms
Down
- 1. -the process by which one or more substances change to produce one or more different substances
- 3. -a law states that _____ cannot be created or destroyed in ordinary chemical and physical changes
- 4. -substance or molecule that is formed during a chemical reaction; on the right side of a chemical equation
- 6. -substance that speeds up the rate of a chemical reaction
- 7. -a solid that forms and settles out of a liquid mixture
- 10. -substance or molecule that participates in a chemical reaction; on the left side of a chemical equation
- 11. -a chemical reaction where a fuel burns in the presence of oxygen and produces carbon dioxide and water vapor
- 14. -substance that interferes with the action of a catalyst