Across
- 2. a process in which one or more substances are converted to one or more different substances
- 5. a particle that has a mass nearly equal to that of the proton but no electrical charge
- 8. a measure of how much a substance tends to react with other things
- 9. changes in matter that do not change what the matter is (change in color, texture, shape or state)
- 10. the branch of science that studies the properties of matter and how matter interacts with energy
Down
- 1. a very small particle that exists in the nucleus of every atom and has a positive charge of electricity.
- 3. the shiny quality of a surface that reflects light
- 4. anything that has weight and takes up space
- 6. the center of an atom
- 7. the smallest building blocks of matter and make up everything around us