Matter Crossword

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Across
  1. 3. The number of protons in the nucleus of a particular element.
  2. 7. The equation of a compound.
  3. 9. A substance with loosely-packed molecules that has no definite shape, but it has a definite volume.
  4. 12. The small number below an element in a chemical formula that tells you how much of that element there is.
  5. 13. The smallest unit of matter.
  6. 15. A substance with VERY loosely-packed molecules that has not definite volume or shape.
  7. 16. A pure substance that cannot be broken down into other parts.
  8. 17. The name of an element.
  9. 18. A change that alters the shape, size, or color of the substance, but not the composition.
  10. 19. A substance with closely-packed molecules that doesn’t change shape or volume.
Down
  1. 1. The number of molecules there is.
  2. 2. A table of all of the elements.
  3. 4. The letter(s) that represent an element.
  4. 5. The mass of an atom, calculated using the protons and neutrons in an atom.
  5. 6. A change that alters the composition of the substance.
  6. 7. A substance made up of two or more elements.
  7. 8. When two or more substances are mixed and form a chemical reaction.
  8. 10. When two or more atoms or elements are chemically combined.
  9. 11. Two or more atoms chemically bonded.
  10. 14. Anything that has mass and takes up space.