Across
- 2. - the quantity of matter given in a substance
- 9. - change in size or form matter
- 10. - a substance made of two or more elements
- 11. - an action taken in response of something
- 15. - made of one or more atoms
- 16. - two or more substances mixed together
- 17. - when two things stick together
- 18. - the degree of hotness and coolness of an object
Down
- 1. - anything that takes up space
- 3. - to absorb heat
- 4. - the release of heat
- 5. - a basic part of a whole
- 6. - the change of materials into a new substance
- 7. - the ability to do work
- 8. - a link between atoms
- 12. - the smallest part of a substance
- 13. - the amount of space occupied by an object
- 14. - a form of energy