Across
- 4. a number that indicates the number of atoms in a compound formula
- 6. negative particle in an atom
- 8. building block of matter
- 12. the fourth state of matter
- 13. neutral particle in an atom
- 14. the change of a gas directly to a solid
- 15. the law of _____ of mass
- 16. substance to the right of the arrow in a chemical equation
- 17. mass per unit volume
- 20. starting substance in a chemical reaction
- 21. physical property that describes the ability of a substance to dissolve
- 22. one indication of a chemical change
Down
- 1. the amount of space something takes up
- 2. the amount of matter in an object
- 3. the change of a gas to a liquid
- 5. description of a reaction using chemical formulas
- 7. a change in which new substances form
- 9. anything that has mass and takes up space
- 10. a chemical equation that has the same number of atoms of each element on each side
- 11. a physical property that does not depend on the amount of matter present
- 16. a property of matter that you can observe without changing the identity of the matter
- 18. the change of a solid to a liquid
- 19. a number that changes the amount of a reactant or a product