Topic 4: MATTER

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Across
  1. 3. A substance made from two or more different elements that have been chemically joined.
  2. 6. A substance is in a liquid state between the boiling point and the _______________ point.
  3. 7. smallest particle of a substance that has all of the physical and chemical properties of that substance, made up of one or more atoms.
  4. 10. Each _______________ has it’s own melting point, which can be used to help identify material.
  5. 11. ________________ is made of elements.
  6. 12. This is the point when a liquid changes to a solid.
  7. 14. Amount of matter in a particle or object.
  8. 16. A physical property that you can feel by applying pressure to an object.
  9. 20. Individual particles at the surface gain enough energy to escape the surface of a liquid and become gas particles.
  10. 22. No definite shape, no definite volume
  11. 23. Substance that dissolves in a solvent to produce a solution.
  12. 24. The surface structure of an object that can be observed by touching an object.
  13. 25. The Law of __________________________ of Mass states that mass is neither created nor destroyed during any physical or chemical changes.
  14. 26. Physical properties occur when matter changes form, but not _______________ composition.
  15. 27. Amount of space that a substance or object occupies.
  16. 28. A _________________________ increase causes metals to expand.
  17. 29. (2 words, no spaces) A change in matter which does not alter the chemical properties of the matter.
  18. 31. Different materials are combined together, but each material keeps its own properties and can be easily separated.
Down
  1. 1. State of matter where the particles can move, and can flow and take on different shapes.
  2. 2. (2 words, no spaces) At 100 ℃ water goes from a liquid to a gas.
  3. 4. In this state of matter, the particles are very close together and cannot move passed each other.
  4. 5. Temperature is a measurement of how fast the _______________ in an object are moving.
  5. 8. (2 words, no spaces) When a substance combines with another to form a new substance.
  6. 9. When matter changes its _______________, it is still the same type of matter.
  7. 13. a simple substance that cannot be broken down into smaller parts or changed into another substance; basic part is called an atom.
  8. 15. (2 words, no spaces) Matter is composed of tiny particles, that are not visible, called atoms.
  9. 17. In a chemical change, particles that made up the original substance, ___________________ to form a new substance
  10. 18. Created when a solute dissolves evenly in a solvent.
  11. 19. The smallest part of an element.
  12. 21. These join together to form molecules.
  13. 30. You can use this tool to separate particles of different sizes.