Across
- 3. a substance that provides an alternate route from reactants to products that doesn’t require as much energy to jump-start
- 5. the tendency of energy to disperse
- 6. a substance that is present before a chemical reaction and takes part in it
- 7. simple carbohydrates
- 9. A change in a substance that results in one or more new substances being formed that have different physical and chemical properties than those of the original substance
- 12. made of three parts: a base that has nitrogen in it, a sugar,and a phosphate group
- 13. basic building block of matter
- 17. the substance formed during a chemical reaction
- 18. water’s polarity allows it to attract other substances besides water
- 19. the immaterial stuff that gets things done
Down
- 1. organic compounds made of carbons,hydrogen,and oxygen
- 2. changes that don't change a matter's identity
- 4. the measurement of the speed that particles move
- 8. molecules that have a central carbon bonded to four groups
- 10. pure substances made up of only one kind of atom
- 11. a pure substance made of two or more elements chemically combined
- 14. the attraction of water molecules for each other
- 15. non-polar molecules
- 16. stored chemical energy that holds two atoms together
- 20. a naturally occurring catalyst, usually a protein