Across
- 2. The capacity for doing work.
- 6. A material that is the same through and through.
- 8. The smallest unit of ordinary matter that forms a chemical element.
- 9. A substance that delays, slows, or prevents a chemical reaction.
- 11. SI unit for pressure
- 17. (Law of) ________; states that all things trend towards chaos.
- 18. The percent by mass of each element in a compound.
- 20. A metallic substance composed of two or more elements.
Down
- 1. The simple form of a chemical reaction.
- 3. Radioactive isotopes of an element.
- 4. The minor component in a solution, dissolved in the solvent.
- 5. The quantity of matter in an object
- 7. A positively charged ion.
- 10. Anything that has mass and takes up space.
- 12. The six nonmetal elements that make up group 7 of the periodic table.
- 13. SI base unit for the amount of substance.
- 14. A negatively charged ion.
- 15. A well tested explanation for a broad set of observations.
- 16. The molecules that make up this state of matter are arranged in regular, repeating patterns.
- 19. A group of atoms bonded together.