Across
- 2. when they have metallic and non-metallic properties
- 4. slow chemical change
- 7. new materials produced by the reaction
- 8. characteristics that can be used to describe a substance
- 10. when two non-metals combine
- 16. when no additional materials can enter or leave
- 19. absorbs heat
- 20. the ability of a substance to conduct electricity or heat
- 21. chemical reactions that occur when oxygen reacts with a substance to form a new substance
- 22. Group 17 elements are called
- 23. when two or more elements combine
- 24. when a metal and non-metal form an aqueous solution of
Down
- 1. shiny, malleable, and ductile
- 3. when a non-metal and metal combine
- 5. solid or gas
- 6. when the product of the reaction can escape
- 9. when ions can form when certain atoms of elements combine
- 11. compound have a chemical name and a
- 12. materials at the start of a reaction are called
- 13. horizontal rows in the periodic table of elements
- 14. has the same mass as a proton
- 15. releases heat
- 17. vertical columns on the periodic table
- 18. when gas turns into a solid
- 19. catalyst involved in chemical reactions in living things