Matter Crossword

5. the process by which energy is transferred from a warmer object to a cooler object by means of physical contact
6. process by which a substance changes from its liquid state into its solid state
7. a characteristic of a substance that can be observed without changing the identity of the substance
8. a measure of the average amount of kinetic energy of the particles of an object
11. process by which a gas becomes a liquid
12. anything that has mass and volume
13. process by which a substance changes from its liquid state to its gas state, the liquid is heated to a specific temperature at which bubbles of vapor form within the liquid
15. energy that travels across distances in the form of electromagnetic waves
18. matter that has a definite volume but does not have a definite shape; molecules are close together but not bound to one another
19. process by which a substance changes from its solid state to its gas state without becoming a liquid first
20. a property of matter representing the mass per unit of volume

1. a process by which energy is transferred in gases and liquids, occuring when a warmer less dense area of gas or liquid is pushed up by cooler, or more dense area of gas or liquid
2. process by which a substance changes from its solid to its liquid state
3. a theory stating that all matter is made of particles of motion
4. an amount of three-dimensional space, often used to describe the space that an object takes up
9. process by which a substance changes from its liquid state to its gas state by random particle movement, usually occurs on the surface of a liquid
10. matter that has a definite shape and a definite volume; molecules are in fixed positions that are close together
14. matter with no definite volume and no definite shape; molecules are very far apart and the amount of space between them can change easily
16. a measure of how much matter an object is made of
17. the force of gravity on an object