Heat, Matter, and Molecular Energy

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Across
  1. 1. Distinct forms of matter known in everyday experience; include solid, liquid, gas; also referred to as phases.
  2. 5. The simplest unit of a chemical compound that can exist; formed when two or more atoms join together chemically.
  3. 6. To strike or hit something with any amount of force.
  4. 8. Movement of energy from one system to another.
  5. 9. A state of Matter with a definite volume but no definite shape.
  6. 12. The smallest particle of an element; made of electrons, protons, and neutrons.
  7. 15. A state of matter with a definite volume and shape.
  8. 16. Energy of motion.
  9. 17. A form of matter with an indefinite shape and volume.
  10. 18. Energy transferred between two objects of different temperatures moving continually in a predictable pattern, from a warmer site to a cooler site until all sites have reached the same temperature.
  11. 19. When a sample of matter changes from a solid to a liquid.
Down
  1. 2. Thermal energy is the total kinetic (motion) energy of the tiny particles that make up matter. The faster the particles move, the warmer the matter becomes.
  2. 3. When a sample of matter changes from a liquid to a solid.
  3. 4. Energy that is stored in a system or object.
  4. 5. Anything that has volume and mass; occurs as elements, compounds, and mixtures.
  5. 7. Defines how two different systems can be said to be the same temperature.
  6. 10. The process by which a sample of matter changes from a gaseous state to a liquid state.
  7. 11. The sum of all of the kinetic energy (KE) and potential energy (PE) found within a substance.
  8. 13. Average kinetic energy of all the particles in a material; measured by a thermometer in degrees (usually Celsius or Fahrenheit).
  9. 14. Force exerted on matter through contact with other matter; affects melting and boiling points.