Science vocabulary crossword

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Across
  1. 3. a particle of matter that uniquely defines a chemical element.
  2. 7. the measurement of how tightly a material is packed together.
  3. 10. the ability of a substance to undergo a specific chemical change.
  4. 12. a type of matter which is made up of specific composition.
  5. 13. a dimensionless quantity representing the amount of matter in a particle or object.
  6. 14. table a tabular array of the chemical elements organized by atomic number,
  7. 15. the force acting on an object due to gravity
  8. 17. a group of atoms bonded together
  9. 18. the amount of force applied perpendicular to the surface of an object per unit area
  10. 19. anything that takes up space and can be weighed.
Down
  1. 1. a substance that has no fixed size or shape.
  2. 2. the process by which water vapor in the air is changed into liquid water
  3. 4. basic unit of mass in the metric system and a thousand grams
  4. 5. the measure of hotness or coldness expressed in terms of any of several scales, including Fahrenheit and Celsius.
  5. 6. a measure of the amount of three-dimensional space an object fills.
  6. 8. a type of matter with specific properties that make it less rigid than a solid but more rigid than a gas
  7. 9. a characteristic of a substance that can be observed or measured without changing the identity of the substance.
  8. 11. A substance that cannot be broken down into simpler substances by chemical means
  9. 16. a substance which exists in the solid-state, which is one of the four fundamental states of matter.