Across
- 6. a reaction where energy goes in, and the products often end cold
- 7. the scientist that created a Nitrogen fixation process, often used for fertilizer
- 9. stored energy depending on the position of the object
- 11. an ion with a positive charge
- 12. the phase change when a gas changes directly to a solid
- 14. the splitting of atomic nuclei that releases mass amounts of energy
- 15. element 8
- 16. anything that has mass and takes up space
- 17. the equation that is represented by mass divided by volume
- 19. two hydrogen atoms coming together from mass temperature and pressure, forming a He atom
- 20. A scientist that created the principle of equilibrium, and also blew up his lab partner
Down
- 1. the energy required for a reaction to occur
- 2. a system where neither energy nor matter can escape
- 3. the ability to do work or transfer heat
- 4. a substance that repels water
- 5. the energy of movement
- 8. the chemical change that happens when iron interacts with water
- 9. an example of an endothermic reaction that happens in plants
- 10. a reaction where energy comes out of the reaction
- 13. the total heat content of a system
- 18. your favorite subject