Across
- 1. A mixture of different substances that are not separately visible
- 4. A substance that can be pounded or rolled into sheets
- 6. The prefix used in a molecual compund when there are five number of atoms
- 7. The slow chemical change that occurs when oxygen in the air reacts with a metal
- 8. A chemical reaction which takes place in your body
- 12. A chemical reaction that occurs when oxygen reacts with a new substance to form a new substance and give off energy
- 13. A horizontal row in the periodic table
- 14. Pure substances formed due to the attrection of particles of opposite charges
- 16. The law that describes that no matter is either formed or destroyed during a chemical reaction
- 21. Most reactive non-metals
- 23. A reaction that absorbs heat (Turns Cold)
- 24. Most stable and unreactive elements
Down
- 1. A cloudy mixture in which the tiny particles of a substance are held within another
- 2. A pure substance formed when non-metals combine
- 3. The new WHMIS(2015)
- 5. Most reactive metals
- 9. The new materials produced after a reaction
- 10. The materials at the start of a reaction
- 11. A system that does'nt let any matter escape during a chemical reaction
- 15. Positively charged particles
- 17. A vertical collumn in the periodic table
- 18. A system that lets some matter in a chemical reaction escape (For example a beaker)
- 19. Any solid that can be stretched into a long wire
- 20. A substance that helps a reaction proceed faster
- 22. A reaction that realeases heat energy (Gets Hot)