Across
- 3. A cloudy mixture that can be separated
- 6. most unreactive non metal
- 8. contains only non-metal elements
- 10. indicates the mass of one atom in an element
- 11. a organic catalyst
- 13. Anything that has mass or occupies space
- 14. substance A substance that is made up of one kind of matter
- 16. A chemical reaction that absorbs heat energy
- 19. has different substances but are not visible
- 21. workplace hazardous information system
- 22. anything on the periodic table
- 23. A cloudy mixture that cannot be separated
- 24. elements that have both metal and non-metal properties
Down
- 1. most reactive non metals
- 2. Contains metal and non-metal elements
- 4. the result of the mixture of the reactants
- 5. ability to burn,reaction with acid
- 7. most reactive metals when exposed to H2O AND CO2
- 9. most reactive metals
- 12. colour,lustre,boiling point,melting point
- 15. the number that indicates the number of protons in the elements nucleus
- 16. a chemical reaction that releases heat energy
- 17. are the materials that start a reaction
- 18. are substances that helps a reaction process speed up
- 20. A substance that contains more than one pure substance