| Give the name & charge for the 3 subatomic particles in an atom. |
| What is the smallest particle of matter that keeps all the same properties of oxygen? |
| What is an element? |
| All matter in the universe is made of what? |
| Where are electrons found in atoms? |
| Electrons will move to a higher energy level whenever they absorb what? |
| If atoms are packed tightly together is the substance a solid, liquid, or gas? |
| If the outer energy level of an atom is filled with electrons, will it react? |
| If an atom only has 6 outer electrons, will it gain or lose electrons to form an ionic bond? |
| If an atom has 2 outer electrons, will it gain or lose electrons to form an ionic bond? |
| Why is carbon able to form four covalent bonds with other atoms? |
| Are covalent bonds formed from sharing or transferring electrons between atoms? |
| Where are the electrons found that are involved in ionic & covalent bonding? |
| What is an atom called that has lost or gained electrons? |
| Are ionic bonds formed from sharing or transferring electrons between atoms? |
| If the products have less energy than the reactants in a chemical reaction, is the reaction endergonic or exergonic? |
| Has energy been released or absorbed if the products of a reaction have less energy than the reactants? |
| Chemical reactions drive all of the activities within __________. |
| Sketch a graph showing an exergonic reaction. |
| What helps reduce the amount of activation energy required in chemical reactions? |
| Biological catalysts are called __________. |
| Cells contain thousands of different enzymes. True or False |
| Has a molecule been oxidized or reduced when it gains an electron & hydrogen ion? |
| Oxidation-reduction reactions in organisms allow the passage of _________ from molecule to molecule. |
| __________ is determined by the number of particles of a substance in a solution. |
| If a solution is neutral, what is true about its number of hydrogen & hydroxide ions? |
| If a solution is alkaline or a base, does it have more hydroxide or hydrogen ions? |
| If a solution has a pH of 11, is it an acid or base? |
| Solutions with a pH less than 7, would be acids or bases? |
| _________ in organisms help prevent great changes in pH. |
