APES "Summer Homework" Review

4. Melting polar ice is an example of a ____ feedback loop.
8. Non-living environmental factor that can affect an organism's survival, like temperature or water.
9. The atomic number of an element is the number of ___.
10. An organism that obtains its nutrition from complex organic substances.
12. The process in living organisms of generating energy from the sun and carbon dioxide.
13. Concentration of hydrogen ions in a solution.
14. Several interacting population in a common area.
16. Animal that lives by preying on other animals.
18. Stored energy.
19. Energy conversions move from higher to lower grade energy.
21. We can _____ matter but not energy.
22. Physical substance that takes up space and has mass.
23. The basic unit of a chemical element

1. Collectively, protons, neutron, and electrons.
2. The first law of this states that energy can be neither created nor destroyed.
3. Organism able to generate energy using the sun's energy and inorganic compounds.
5. Atoms of a single element with different mass numbers.
6. Property of matter and radiation manifested as the ability toco do work.
7. Atom with a net electric charge.
11. Energy created by objects in motion.
13. An animal hunted and killed by another for food.
14. Type of change in which molecular bonds are broken and reformed to create new substances.
15. The fundamental structural and functional unit of life.
17. The process of generating energy using oxygen and sugar.
20. Low-quality energy often referred to as energy "lost".