Across
- 3. occurs when two or more substances mix
- 5. the mass of an atom or element
- 7. a chart that sorts out all elements
- 9. when a reaction turns into jelly or a solid
- 13. a property that is measurable and color able
- 15. substance that is used in chemistry or science
- 16. what you start with
- 17. the building blocks of every thing
- 18. an element that is in the air and makes up multiple substances
- 19. when multiple atoms combine
- 20. the person who created the periodic table
Down
- 1. an element that is very hard
- 2. a tool that is used to hold substances in science
- 4. the base unit of a chemical element
- 6. any material that reacts with an element
- 8. a branch of science that deals with the identification of substances
- 10. a substance that is created from a chemical reaction
- 11. a tool to measure substances in science
- 12. of the same kind
- 14. what you get after a chemical reaction