Bio CK12 1.14 Biochemical Reactions

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Across
  1. 2. basic unit of structure and function of living things.
  2. 3. In chemical reactions matter is always _______
  3. 6. CH4
  4. 8. sharing of electrons between two atoms that holds the atoms together
  5. 11. Chemical reactions that take place inside living things
  6. 14. substance that is present at the start of a chemical reaction.
  7. 16. With no number in front of a chemical symbol, just ____ molecule is involved
Down
  1. 1. In a chemical reaction, the _______ of each element does not change
  2. 2. a representation of a chemical reaction that displays the reactants and products with chemical formulas; multiple reactants or products are separated with a plus sign, and reactants are separated from the products with a yield arrow.
  3. 4. The same number of atoms of each _______ appears on each side of the arrow
  4. 5. H20
  5. 7. the simplest form of matter that has a unique set of properties.
  6. 9. process that occurs when one or more substances, called reactants, is changed into one or more new substances, called products.
  7. 10. study of life.
  8. 12. ________ is a greenish gas and very poisonous
  9. 13. CO2
  10. 15. O2