Across
- 9. Smallest unit of ordinary matter
- 10. Amount of space occupied
- 12. Space with almost no matter
- 13. Rate of motion
- 14. Force resisting motion between surfaces
- 16. Energy emitted as waves or particles
- 17. State of matter with fixed shape
- 18. Slow vaporization at surface
- 20. Push or pull on an object
- 22. Change from liquid to solid
- 23. Group of bonded atoms
- 25. Energy transfer by force through distance
- 26. Heat transfer by fluid motion
- 28. Positively charged particle
- 32. Neutral particle in nucleus
- 35. Measure of average kinetic energy
- 38. Total heat content of a system
- 43. Negatively charged particle
- 44. Decrease in volume under pressure
- 46. Common temperature scale unit
- 47. Unit of heat energy
- 48. Change from solid to liquid
- 49. Body storing thermal energy
- 50. Absolute temperature scale unit
Down
- 1. State of matter with fixed volume
- 2. Spreading of particles in fluid
- 3. Solid changing directly to gas
- 4. Increase in size or volume
- 5. Heat transfer through contact
- 6. Capacity to do work
- 7. Rapid vaporization in liquid
- 8. Quantum of light energy
- 11. Material allowing heat flow
- 15. Measure of disorder in a system
- 19. Speed with direction
- 21. Energy transferred by temperature difference
- 24. Mass per unit volume
- 27. Gas changing to liquid
- 29. Central core of atom
- 30. Material resisting heat flow
- 31. Ionized state of matter
- 33. Rate of change across distance
- 34. Tiny piece of matter
- 36. Amount of matter in an object
- 37. Balance of opposing processes
- 39. Rate of energy transfer
- 40. State of matter with no fixed shape
- 41. Force exerted per unit area
- 42. Impact between particles
- 45. Distinct form of matter state