9th Grade Review

3. Section of the small intestine where nutrients are absorbed.
4. Substances that go into a chemical reaction.
7. Smallest particle of an element that retains its chemical properties.
10. The removal of metabolic waste products from an organism.
13. The chemical process in cells that releases energy from glucose using oxygen
14. Condition caused by lack of vitamin C.
16. the quantity of electricity carried by particles
17. Process where heavier particles settle to the bottom of a liquid.
18. Two or more atoms chemically bonded together.
19. Pure substance made of only one type of atom.
22. Substances formed as a result of a chemical reaction.
23. Enzyme that breaks down proteins into amino acids.

1. Part of the small intestine where most chemical digestion occurs.
2. Bond formed by sharing electrons between atoms.
5. Negatively charged particles orbiting the nucleus.
6. Enzyme that breaks down starch into sugars.
8. Bond formed by transfer of electrons between atoms.
9. Method of separating insoluble solids from liquids using a barrier.
11. A mixture where components are evenly distributed and not visible.
12. Flow of electric charge through a conductor
13. The biological process by which organisms produce offspring.
15. Measure of electrical potential difference between two points
20. Control center of the cell that contains genetic material.
21. Organelle known as the “powerhouse” where aerobic respiration releases energy.