science

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Across
  1. 1. diamond is a _______
  2. 3. Examples of _________ include flammability, toxicity, acidity, reactivity
  3. 5. firm and stable in shape
  4. 6. having a consistency like that of water or oil
  5. 7. Burning of paper and log of wood is what
  6. 11. a form of matter in which many of the electrons wander around freely
  7. 12. Mud is a _____ of dirt and water
  8. 13. anything that has mass and takes up space
  9. 14. neon is a ____
Down
  1. 1. color change is what______
  2. 2. _____ is what makes up the periodic table
  3. 4. examples of _________ include density, color, hardness, melting and boiling point
  4. 8. a group of two or more atoms is a _____
  5. 9. NaCl is a ________
  6. 10. a particle of matter that uniquely defines a chemical element