Across
- 4. one or two letters used to represent an element
- 5. the substance that is formed from a chemical reaction
- 9. a solid that forms from a solution during a chemical reaction
- 10. a substance that cannot be broken down into simpler substances by ordinary chemical processes
- 12. uses symbols and formulas to show chemical reactions
- 14. the substance that undergoes the chemical change
- 15. a chemical reaction in which heat is given off
Down
- 1. matter is neither created or destroyed during physical or chemical changes there is alwasy teh same number of each atom on both sides of the equation
- 2. the study of properties, composition, and structure of substances
- 3. a process in which substances undergo chemical change
- 6. the regular sized numbers in front of the molecules that tell you how many are in each substance
- 7. the arrow in a chemical equation
- 8. a chemical reaction where heat is lost
- 11. the number after the element
- 13. the smallest unit into which matter can be broken down