Unit 1 review

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Across
  1. 3. The way a mineral reflects light
  2. 6. all the gases that surround Earth
  3. 9. A state of matter that has a definite shape and volume
  4. 17. living things
  5. 18. A mixture that is not uniform in composition; components are not evenly distributed throughout the mixture
  6. 19. A state of matter that has a definite volume but no definite shape.
  7. 20. Center of an atom
  8. 22. energy of motion
  9. 23. A material that does not allow heat or electrons to move through it easily.
  10. 24. Basic unit of matter
  11. 26. A subatomic particle that has no charge and that is found in the nucleus of an atom
  12. 28. matter that has a uniform and definite composition
  13. 29. A subatomic particle that has a positive charge and that is found in the nucleus of an atom
  14. 30. the solid part of the earth consisting of the crust and outer mantle
  15. 31. Elements that are poor conductors of heat and electric current
  16. 33. The tendency to crack or break
  17. 35. the force that holds two atoms together
  18. 36. Elements that are good conductors of electric current and heat.
Down
  1. 1. all the parts of the planet that are inhabited by living things
  2. 2. number of protons
  3. 4. A state of matter with no definite shape or volume
  4. 5. compound that contains a metal
  5. 7. A mixture that forms when one substance dissolves another.
  6. 8. A mixture in which substances are evenly distributed throughout the mixture
  7. 10. two or more atoms held together by bonds
  8. 11. All the water on earth
  9. 12. The land area that supplies water to a river system.
  10. 13. The ability of an object to transfer heat or electricity to another object.
  11. 14. A substance made of only one kind of matter and having definite properties.
  12. 15. The ability to be pulled into thin wires
  13. 16. Non-living things
  14. 21. Elements that have properties of both metals and nonmetals.
  15. 25. A substance made up of atoms of two or more different elements joined by chemical bonds
  16. 27. mass/volume
  17. 32. Number of protons and neutrons
  18. 34. negatively charged particle