Cross word puzzle #2

12345678910111213141516171819202122232425262728293031
Across
  1. 3. change-a change of one element to another element
  2. 6. a substance formed by chemically combining two or more elements
  3. 9. the amount of space that an object occupies.
  4. 10. first law of thermodynamics-the branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, of the relationships between all forms of energy.atom-
  5. 12. a push or pull on an object
  6. 13. change-a change in matter that doesn't alter its chemical identity
  7. 16. that has mass and takes up space-a physical substance
  8. 18. hotness or coldness of a substance stated in degrees; a measure of the average kinetic energy of the particles of a substance.
  9. 21. change-the change from one pressure substance to another
  10. 22. a fluid state of matter in which the particles move so fast and are so far apart as to have a little interaction with each other. Gases have both a changeable shape and volume
  11. 24. change of state from solid to a liquid at the melting point that is caused by adding energy. Melting is in the atmosphere
  12. 25. pure substance made of only one kind of atom
  13. 27. of the matter-The physical form of matter described by its physical characteristics. The state of a pure substance largely depends on its temperature. Matter can be solid, liquid, gas, or plasma Phase of a matter can be another term for the state of matter
  14. 28. a fluid state of matter in which the particles are free to move but are held close to each other. A liquid substance has an unchanging volume but a changeable shape.
  15. 29. the attractive force between and two objects based on their mass
  16. 30. substance- A material made of only one kind of element or compound; not a mixture
  17. 31. when a gas turns into a solid
Down
  1. 1. energy
  2. 2. rigid state of matter in which the particles align in a fixed arrangement. A solid substance has an unchanging shape and volume
  3. 4. change of state from a liquid to gas
  4. 5. change from a gas to a liquid cause by removing energy
  5. 7. change in state from a liquid to a solid caused by removing energy. Freezing is the opposite of melting
  6. 8. charged atom
  7. 11. or more combined atoms
  8. 14. change in state from a liquid to a gas caused by adding energy. Vaporization is the opposite of condensation
  9. 15. change of state from liquid to gas at the boiling point. Boiling is a form of vaporization that occurs when the pressure in the liquid exceeds the atmosphere.
  10. 17. ability to do work
  11. 19. fluid state of matter made extremely high-temperature ionized particles. Blank have both a changeable shape and volume. Since stars are made of plasma it is the most common state of matter in the universe
  12. 20. change from a solid directly to a gas caused by adding energy
  13. 23. force of gravitational attraction between an object's mass and its resident's planet
  14. 26. A physical combination of two or more substances. Mixtures can be separated by physical means