Across
- 3. how a solid can be stretched and made into a long wire.
- 5. how well a substance can stand not getting damaged or scratched.
- 7. a compound where two non-metals are combined.
- 9. how well a substance dissolves in another.
- 10. chemical reaction that releases heat energy.
- 11. chemical reaction that absorbs heat energy.
- 12. how well a substance is conductible with electricity.
- 14. a slow chemical change that occurs when oxygen in the air reacts with a metal
- 15. is the mass of one atom or element
- 17. positively charged center of an atom contains protons and neutrons
- 19. point when a solid changes into a liquid at as certain temp.
- 21. point when a liquid changes into a gas at a certain temp.
- 22. positively charged particle in the nucleus of an atom
- 23. A system which makes it easier to see warning symbols on hazardous materials
Down
- 1. mixture the kind of mixture that the elements are visual in the mixture
- 2. has both metallic and non-metallic properties.
- 4. poisonous
- 6. compounds are pure substances consisting of at least one metal and one non-metal.
- 8. when a substance can be pounded or rolled into sheets of metal.
- 10. is a material that can not be broken down into a simper substance.
- 12. when oxygen reacts with a substance to create a new substance and give off energy.
- 13. the amount of mass in a given volume of a substance.
- 16. the sum of the number of protons and neutrons in an atom
- 18. horizontal rows on periodic table
- 20. vertical columns on a periodic table