Biology Q2 Review

2. Negatively charged particle in a cloud around the nucleus
5. A protein that speeds up or slows down a chemical reaction
7. The smallest particle of an element that retains all of its properties
8. This enzyme is present in potatoes and can be broken down by hydrogen peroxide
9. Atomic number of Magnesium (write the number as a word)
10. Iodine turns purple in the presence of starch. It is known as an ____
13. Positively charged particle in the nucleus
14. When a solute spreads out in a solution
16. Anything that has volume and mass
18. The attraction between different substances, such as water and a penny
21. This part of the cell allows materials to pass in and out
22. These are the right side of a chemical equation

1. Substance that cannot be broken down into simpler substances
3. Chemical reactions that release energy in the form of heat
4. The center of an atom. Also an organelle in Eukaryotic cells.
6. The solvent moves across a membrane from an area of low concentration to an area of high concentration
11. An atom with different masses due to more or less neutrons
12. _______ tension is the property of a liquid that allows you to create a dome of water on a penny
15. The attraction between two of the same molecules
17. These are the ingredients in a chemical reaction
19. An atom with a charge due to an imbalance of protons and electrons
20. Neutral particle in the nucleus.