Unit 1, Lessons 1 - 4

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Across
  1. 3. A characteristic of a substance that can be observed or measured without changing the identity of the substance.
  2. 4. Made up of different kinds of atoms chemically combined into a molecule.
  3. 6. Occurs when one or more substances change into entirely new substances.
  4. 8. States that in ordinary physical and chemical changes, mass is not created or destroyed.
  5. 10. The amount of gravitational force on an object.
  6. 11. Describes a substance's ability to change into a new substance with different properties.
  7. 12. How much space something takes up or occupies.
  8. 14. How much matter is in an object.
  9. 16. Contains a variety of elements and compounds that are not chemically combined.
Down
  1. 1. A mixture that does not have a uniform composition.
  2. 2. A change that affects one or more physical properties of a substance.
  3. 5. The measure of the amount of mass in a given volume.
  4. 7. A substance that has definite physical and chemical properties such as appearance, melting point, and reactivity.
  5. 9. A mixture that has a uniform composition.
  6. 13. Anything that has mass and takes up space.
  7. 15. The smallest unit of an element that maintains the properties of that element.
  8. 17. Made up of one or more of the same kind of atom chemically combined.