Unit 1

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Across
  1. 1. The amount of space that an object takes up, or occupies
  2. 4. The smallest unit of an element that maintains the properties of that element
  3. 5. A combination of two or more substances that are not chemically combined
  4. 6. The state of matter that has a definite volume but not a definite shape
  5. 8. A characteristic of a substance that does not involve a chemical change, such as density, color, or hardness
  6. 9. The change of state from a liquid to the solid
  7. 10. The change of state from gas directly to a solid
  8. 13. A change that occurs when one or more substances change into an entirely new substance with different properties
  9. 15. Anything that has mass and takes up space
  10. 16. A sample of matter, either a single element or a single compound, that has definite chemical and physical properties
  11. 19. The change of state from a liquid to a gas
  12. 20. A substance made up of atoms or ions out of two or more different elements joined by chemical bonds
  13. 21. The change of state from a gas to a liquid
  14. 22. The process in which a solid changes directly into a gas
  15. 23. Describes something that has a uniform structure or composition throughout
Down
  1. 2. A substance that can not be broken down into simpler substances by chemical means; all atoms of the element have the same atomic number
  2. 3. A form of matter that doesn’t have a definite shape or volume
  3. 5. A measure of the amount of matter in an object
  4. 6. That law that states that mass cannot be created or destroyed in ordinary chemical or physical changes
  5. 7. A measure of the gravitational force on an object; its value can change with the location of the object in the universe
  6. 8. A change of matter from one form to another without changing its chemical properties
  7. 11. The state of matter in which the volume and shape of a substance are fixed
  8. 12. Describes something that does not have a uniform structure or composition throughout
  9. 14. A property of matter that describes a substance’s ability to participate in chemical reactions
  10. 15. The change of state from a solid to a liquid
  11. 17. The ratio of mass of a substance to the volume of the substance
  12. 18. The change of state from a liquid to a gas at a specific temperature