Unit 2, Lesson 1 (p. 90-95) and Class Notes

Edit Answers
123456789101112131415161718192021
Across
  1. 2. This is a type of protein that speeds up chemical reactions.
  2. 5. The smallest unit of matter.
  3. 7. This is a type of chemical bond where atoms are losing and gaining electrons.
  4. 10. This is a type of organic compound that is the main energy source for living things.
  5. 11. The resulting substance(s) as a result of a chemical reaction.
  6. 16. This word means "single sugar."
  7. 17. This is a type of chemical bond where atoms are sharing electrons.
  8. 20. This is the number of electrons the second energy level holds.
  9. 21. This is a type of organic compound that includes fats, oils, waxes, and steroids.
Down
  1. 1. When an atom loses an electron, this is the type of charge it gains.
  2. 3. Atoms will undergo chemical reactions to become ___.
  3. 4. 2H2O has ___ hydrogen atoms and 2 oxygens.
  4. 6. Made up of two or more atoms.
  5. 8. This element is the basis of most molecules that make up all living organisms.
  6. 9. Substances made up of two or more different elements.
  7. 12. When an atom gains an electron, this is the type of charge it gains.
  8. 13. The initial substances in a chemical reaction
  9. 14. CO2, carbon dioxide has one carbon and __ oxygens.
  10. 15. This word means "many sugars."
  11. 18. This is the type of organic compounds that are made up of amino acids.
  12. 19. acids This is the type of organic compounds that includes DNA and RNA.