Chemistry cross word

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Across
  1. 3. A change in the appearance or state of a substance that does not change the composition
  2. 5. A chemical reaction that releases energy
  3. 6. Mixture in which different substances that make up the mixture are visible
  4. 8. Number of protons in the nucleus of one atom of an element
  5. 10. A pure substance formed when non-metals combine
  6. 13. Description of how a substance interacts with other substances, such as acids; It is only observable when a chemical change occurs
  7. 15. Property that describe the physical appearance and composition of a substance
  8. 17. Change of state from a liquid to a gas
  9. 18. Change of state from a liquid to a solid
  10. 22. Change of state from a gas to a liquid
  11. 23. A mixture of two or more pure substances that looks like one substance
  12. 25. A table in which the element are organized by their physical and chemical properties
  13. 26. A substance only made up of one kind of matter,which has a unique set of properties
Down
  1. 1. Anything that has mass and occupies space
  2. 2. Chemical reaction that absorbs energy
  3. 4. Change of state from a solid to a liquid
  4. 7. Change that results when two or more substances react to create a different substance or substances, the new substances have to be completely different properties from the original ones
  5. 9. Change of state from a solid to a gas or from a gas to a solid
  6. 11. Change of state from a gas to a solid
  7. 12. Mass of one atom of an element calculated from the total number of protons, neutrons and electron of that atom
  8. 14. A cloudy mixture in which tiny particles of one substance are held within another, and the particles can be separated out
  9. 16. A pure substance formed when at least one metal and one non-metal combine
  10. 19. A cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance
  11. 20. A pure substance that cannot be broken down into other substances, it is made up of only one type of atom
  12. 21. A chemical combination of two or more elements in a specific ratio
  13. 24. A combination of pure substances that don't always combine chemically and are not always in the same ratio