What's the matter?

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Across
  1. 4. Products with new characteristic properties are formed as a result of this type of change
  2. 6. Energy is never created or destroyed; it is only ___.
  3. 7. If a substance is made up of only one type of matter, and it is uniform or constant throughout, we describe the substance as ____.
  4. 10. The study of matter and its properties.
  5. 11. Sodium and chlorine are elements but when they are chemically combined, they form a ____, which is a type of pure substance made of more than one type of atom.
  6. 14. The number of grams of water I would have if I melted twenty grams of ice
  7. 16. Two hydrogen atoms, each bonded to one oxygen atom, make up a water ____.
  8. 17. The fact that there are equal numbers of atoms of the same element on either side of a chemical equation proves the Law of _____ of Mass.
  9. 18. Chemical symbols for one of these can be found on the period table; also a pure substance that is made up of only one type of matter.
  10. 19. Forces that hold atoms together in a molecule; get broken when a substance goes through a chemical change
Down
  1. 1. Made of a single element and is the smallest particle that still has all of the characteristic properties of the element
  2. 2. Occurs when reactants form production.
  3. 3. A property of matter that can be used for identification purposes because it doesn't change for a specific substance is known as a ____ property.
  4. 5. Solids, liquids, gases, and plasma are the four naturally occurring ones
  5. 7. Heating up water to the point that it turns into water vapor is an example of a ___ change.
  6. 8. Matter and energy do not leave this type of a system.
  7. 9. Potential energy and ___ energy are the two major forms of energy. All of types of energy are just sub-sets of those two forms.
  8. 12. Has mass, is made of atoms, and takes up space.
  9. 13. The general name for the materials you start off with during a chemical reaction; found on the left side of a chemical equation.
  10. 15. The ability to cause change