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Biology
| Question | Answer |
|---|---|
| What is a control group? | Used for comparison that does not receive the treatment in the experiment. Makes sure all the aspects of the experiment are working properly. |
| What is the purpose of having multiple trials? | To reduce the effect of errors and thus increase the reliability of the results of an experiment. |
| What is a constant? | Factors in an experiment that do not change. |
| What is a Independent Variable? | The variable that “I” as a researcher change on purpose; the variable that the researcher is testing. |
| What is a Dependent Variable? | The data that the researcher is collecting; this variable depends on the independent variable. |
| What is a positive control group? | A group where the conditions of the experiment are set to guarantee a positive result. Shows the experiment is functioning properly as planned. |
| What is a negative control group? | A group where the conditions of the experiment are set to cause a negative outcome where the experiment doesn’t work. |
| When do you use a bar graph? | When the IV is a group or category. |
| When do you use a line graph? | When the IV is continuous numbers such that something exists between those values. |
| Where does acid fall on the pH scale? | A pH lower than 7. |
| Where do bases fall on the pH scale? | A pH higher than 7. |
| What is a Hydrogen ion? | Ion’s in acid |
| What is an Hydroxide ion? | Ion’s in bases |
| What is a Buffer? | A substance that resists a change in pH. It can act as either a acid or base to neutralize the acid or base being added. |
| What is an ion? | Any atom that has a full charge, either positive or negative, because it has gained or lost electrons. |
| What is a Neutron? | Has no charge and is part of the nucleus. |
| What is a Proton? | Has a positive charge and is part of the nucleus. |
| What is a Electron? | Has a negative charge and surrounds the nucleus. |
| 3 subatomic particles that make up an atom: | Protons, Electrons, and Neutrons. |
| When at least two atoms combine together, a ________ is produced. | molecule |
| What is a Polar Covalent Bond? | A bond that connects a positive and negative end. |
| What is polar? | Molecules with a separation in charge across the molecule resulting in both positive and negative parts of the molecule. |
| What is non-polar? | Molecules that are covalently bonded and do not have a difference in charge across the molecule. |
| A ________________ forms between the positively charged hydrogen of one molecule and its attraction to the negative part of another molecule. | hydrogen bond |
| ________________ occurs because of attractive forces between molecules at the surface of a liquid. | Surface tension |
| _______ is the attraction that the molecules of a substance have for the other molecules within the same substance. | Cohesion |
| __________ is the attraction that the molecules of one substance have for the molecules of a different substance. | Adhesion |
| ___________ is the amount of energy required to raise 1 gram of a substance, 1 degree Celsius. | Specific heat |
| What are properties of water? | Surface tension, cohesion, adhesion, high specific heat, and ice floats. |
Created by:
Jaela1
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