Across
- 2. atoms of the same element that have different number of neutrons
- 4. the quantity of heat required to raise the temperature
- 9. absorption of heat
- 11. the movement of heat going up and cold going down
- 12. the smallest amount of energy that can be emitted or absorbed as electromagnetic radiation
- 13. the releasing of heat
- 15. the study of heat in chemical reactions
- 17. a subatomic particle of about the same mass as a proton but without an electric charge
- 20. lets go of
- 21. a fundamental property of electrons that describes their intrinsic angular momentum
- 23. basic unit of a chemical element
- 24. the degree of disorder or uncertainty in a system
- 25. a subatomic particle with a positive charge
Down
- 1. energy that travels in the form of waves or particles
- 3. the natural agent stimulates sight and makes things visible
- 5. equal in value,amount,function,meaning
- 6. a stable subatomic particle with a charge of negative electricity
- 7. the rate at which something occurs or is repeated over a particular period of time in a given sample
- 8. distance between successive crests of a wave
- 10. a pure substance consisting of only one type of atom
- 14. measurement of energy in a thermodynamic system
- 16. the total number of protons and neutrons in an atoms nucleus
- 18. the process of heat or electricity that passes through something
- 19. being hot or high in temperature
- 22. takes in