Across
- 4. a change in properties such as texture, shape, or state,
- 6. combination of parts or elements so as to form a whole
- 12. a reaction that occurs when heat is released
- 13. A bond formed by a nonmetal and a metal
- 14. a substance that is present at the start of a chemical reaction
- 17. the degree of compactness of a substance
- 18. a reaction that occurs when heat is absorbed
- 21. an element with a positive charge
- 22. a bond formed by two nonmetals
- 24. a substance that is present at the end of a chemical reaction
Down
- 1. the reaction that requires burning and fire
- 2. an atom with a net charge
- 3. the table which chemical elements are organized by atomic number
- 5. change that causes a new substance to be formed
- 7. the kind of elements on the right side of the periodic table
- 8. a reaction in which one element replaces a similar element in a compound
- 9. the kind of elements on the left side of the periodic table
- 10. two compounds are exchanged making
- 11. how easily a substance reacts chemically with other substances
- 15. a compound is broken down to the elements that make it up
- 16. an element with no charge
- 19. new compounds
- 20. same amount of protons different number nuetrons
- 23. an element with a negative charge