Across
- 4. a table showing all elements grouped from lowest atomic number to highest atomic number.
- 5. the wave's height from the origin to a crest to a trough
- 7. heat transfer through currents
- 8. heat transfer by touch
- 10. energy absorbed by the reaction of its surroundings
- 14. the amount of energy needed to activate atoms
- 17. the weighted average of the masses
- 19. the measure of disorder in a system
- 21. energy of motion
- 22. minimum amount of energy that can be gained or lost by an atom
- 23. heat transfer through waves
- 25. electrons in the outermost shell
Down
- 1. the number of waves that pass a given point per second
- 2. negatively charged atom
- 3. the smallest unit of matter
- 6. energy at rest
- 9. total heat content of an atom
- 11. neutral charged atom
- 12. positively charged atom
- 13. a charged particle
- 15. the study of how heat is involved in chemical reactions
- 16. an atom with the same element but different number of neutrons and mass
- 18. the shortest distance between equivalent points on a continuous wave
- 20. the electron arrangement in an atom
- 24. energy released by the reaction of its surroundings