Across
- 1. Two or more different types of atoms (elements) chemically combined
- 5. An expression that shows the elements in a compound with their subscripts. Example CH4
- 8. The negative subatomic particle.
- 9. A type of matter that has the same composition throughout; matter with a particular chemical makeup.
- 11. A characteristic of matter that can be observed or measured without changing the identity of the substance. For example, mass or state of matter.
- 14. A type of matter in which the individual substances are NOT evenly mixed together. Example: pizza
- 16. A process that changes substances into new substances.
- 18. The substances present before a chemical reaction occurs.
- 19. A substance that is made of only one kind of atom.
- 20. The substances formed during a chemical reaction.
Down
- 1. Matter (mass) cannot be created or destroyed, it can only be rearranged.
- 2. Two or more atoms joined together.
- 3. A characteristic of matter that can be observed only as it changes to a different type of matter. For example: burning.
- 4. A symbolic representation of a chemical reaction. Example 2H2+ O2 + --> 2H2O
- 6. A small particle that is the building block of matter.
- 7. The neutral subatomic particle.
- 10. A change in only the physical properties of a substance. Does not result in a new substance.
- 12. A type of mixture in which the individual substances are evenly mixed together. Example: milk
- 13. A one or two letter abbreviation for an element name.
- 15. The positive subatomic particle.
- 17. Anything that has mass and takes up space (volume).