Across
- 3. A chemical reaction that happens when objects or substances are burned
- 4. A chemical reaction that happens in some living things,such as yeast and bacteria
- 5. Reactions These happen when atoms react and group together diffently
- 8. circuit A closed path through which electricity flows
- 10. A method used to separate solids from liquids in homogeneous mixtures
- 11. A method uses to separate substances of different density in heterogeneous mixtures
- 12. A device with a magnetic needle that always points north.We use it to orient ourselves
Down
- 1. Aconnecting wire,usually made of copper,erapped in plastic covering
- 2. A method used to separated liquids that have different boiling points in homogeneous mixtures
- 6. current The flow of electrical charges through materials
- 7. The component of an electric circuit which transforms electricity into another type of energy
- 9. A material which allows electrical charges to move