Jennie's biology game

2. energy the amount of energy that will break a bond between two atoms
5. an atom that has gained or lost one of more electrons
7. a substance made of atoms of different elements bonded together in a certain ratio
8. a segment of DNA that stores genetic information
13. all organisms and the part of Earth where they exist
14. an organized group of related parts that interact to form a whole
15. a proposed answer for a scientific question
16. tool that provides an enlarged image of an object
17. all of the chemical processes that build up or break down materials
20. a condition that does not change during an experiment

1. a compound that releases a proton
3. acids polymers that are made up of monomers called nucleotides
4. specific reactants that an enzyme acts on
6. catalysts for chemical reactions in living things.
9. the variety of life across the biosphere
10. the smallest basic unit of matter
11. the basic unit of life
12. process that tests a hypothesis by collecting information under controlled circumstances
18. any individual living thing
19. two or more atoms held together by covalent bonds