Across
- 3. this is a theory
- 4. rays a form of energy that you cannot see or feel
- 6. inquiring of something you don't know
- 9. putting together
- 11. of conservation of mass the fact that matter can neither be created nor destroyed by any chemical reaction
- 12. the prediction of what will happen
- 14. elements elements whose nuclei naturally break down into other nuclei, giving off particles and energy
- 16. Graduated cylinders & beakers are used to measure
- 17. The base unit for Mass
- 19. a chemical change in which oxygen reacts with other substances
- 22. this makes up molecules
- 23. the stuff that makes up matter
- 25. The base unit for length
- 26. is formed in the earth from radium, which is also radioactive
- 27. Meter sticks or metric rulers are used to measure
Down
- 1. a gas that occurs naturally
- 2. split apart
- 5. a plentiful fossil fuel
- 7. A thermometer is used to measure
- 8. the stuff that makes up everything
- 10. synthetic fuel
- 13. the study of rocks
- 15. can slowly destroy objects made of iron or steel
- 18. is made of molecules
- 20. fusion a change in which small nuclei join to form a larger nucleus
- 21. how tightly packed the molecule are
- 24. reaction one or more substances change to form new substances