Chapter 2 terms

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Across
  1. 5. the hotness or coldness of a substance, stated in degrees; a measure of the average kinetic energy of the particles of a substance
  2. 7. he ability to do work
  3. 8. a physical combination of two or more substances. They can be separated by physical means
  4. 10. a charged atom or group of atoms caused by a charge imbalance, which is produced by an unequal number of protons and electrons
  5. 11. The change in state from a solid directly to a gas caused by adding energy
  6. 12. a push or a pull on an object
  7. 13. The change in state from a gas directly to a solid caused by removing energy
  8. 15. a change in matter that doesn't alter its chemicla identity
  9. 18. the smallest neutral particle o fan element that retains the characteristics of that element; composed of a posititve nucleus containing protons and usually neutrons, surrounded by negatively charged electrons
  10. 20. two or more chemically bonded atoms
  11. 21. a fluid state of matter in which the particles are free to move but are held close to each other; it has an unchanging volume but a changeable shape
  12. 23. a fluid state of matter in which the particles move so fast and are so far apart as to have little interaction with each other.
  13. 24. a pure substance formed by chemically combining two or more elements
  14. 25. Anything that has mass and takes up space; a physical substance
  15. 26. the change of state from a liquid to a gas at the boiling point.
  16. 29. the change in state form a gas to a liquid caused by removing energy
  17. 31. the attractive force between any two objects based on their masses
  18. 32. is the change of state from a liquid to gas below the boiling point but above the freezing point
Down
  1. 1. a pure substance made of only one kind of atom
  2. 2. scientific law that states that matter and energy cannot be created or destroyed, but can only transfer vetween objects or transform to a different form; also called the Law of Conservation of Matter and Energy
  3. 3. the force o fgravitational attraction between an object's mass and its resident planet
  4. 4. A material made of only one kind o element or compound; not a mixture
  5. 6. a fluid state of matter made of extremely high-temperature ionized particles
  6. 9. a rigid state of matter in which the particles align in a fixed arrangement.
  7. 14. change the change form on pure substance to another bt the rearrangement of atoms in a chemical reaction
  8. 16. change a change of one element into another element by changes occurring in the nucleus of the atom
  9. 17. is the change in state from a liquid to a gas caused by adding energy
  10. 19. the change in state from a liquid to a solid caused by removing energy.
  11. 22. the amount fo space that an object occupies
  12. 25. the change of state from a solid to a liquid at the melting point that is caused by adding energy; opposite of freezing
  13. 27. the measure o fthe amount of matter in an object
  14. 28. is done when a force acts on a moving object in the same or opposite direction o fits motion or when energy is trasferred from on object to another
  15. 30. the physical form of matter described `by its physical characteristics. The state of a pure substance largely depends on its temperature