Term
| What is the goal of science? |
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Definition
| to provide explanations for natural occurrences and to understand patterns and events in nature |
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Term
| What questions can't science answer? |
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Definition
| ethical issues, the supernatural, and opinions |
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Term
| How do scientists answer questions about the natural world? |
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Definition
| using the scientific method |
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Term
| What are the steps of the scientific method? |
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Definition
question
research/inference
form hypothesis
controlled experiment
conclusion
peer review |
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Term
| Why do scientists use a control group? |
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Definition
| so they can tell what variable is responsible for any results they observe |
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Term
| How was the idea of spontaneous generation shown to be false? |
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Definition
| by Redi's experiment that used steak to prove that maggots don't spontaneously generate |
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Term
| What are some characteristics of living things? |
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Definition
organic-made of carbon
maintain homeostasis- regulate body temp
irritability- respond to their environment
have DNA
produce waste |
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Term
| Why is peer review and communicating results important? |
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Definition
| in order to point out any discrepensies or mistakes that would not otherwise be detected |
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Term
| What is the relationship between atoms, elements, and molecules? |
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Definition
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Term
| What are the three subatomic particles? |
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Definition
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Term
| What are the charges of each subatomic particle? |
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Definition
electron - (-)
proton - (+)
neutrons - neutral |
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Term
| How are atoms in a compound held together? |
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Definition
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Term
| What happens in an ionic bond? |
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Definition
| electrons are given and taken between |
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Term
| What happens in a covalent bond? |
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Definition
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Term
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Definition
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Term
| How does the electron configuration of an atom determine it's reactivity? |
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Definition
| the more electrons in the outer shell of the atom, the more stable it is |
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Term
| What does it mean when we say water is a polar molecule? |
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Definition
| it means that since the electrons spend more time around the water than the hydrogen, they form slight polar charges |
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Term
| What are some properties of water due to it being a polar molecule? |
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Definition
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Term
| What is the relationship between solutions,solvents, and solutes? |
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Definition
| solvent is the dissolver, solute is the substance being dissolved, and a solutions is the compound they make up |
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Term
| How are acids and bases different? |
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Definition
| acids have a pH of below 7, and bases have a pH of above 7 to 14 |
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Term
| What are the four organic compounds that make up all living things? |
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Definition
| carbohydrates, lipids, proteins, and nucleic acids |
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Term
| What monomer are carbohydrates made of? |
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Definition
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Term
| What monomer are proteins made of? |
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Definition
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Term
| What monomers are proteins made up of? |
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Definition
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Term
| What monomers are nucleic acids made of? |
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Definition
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Term
| What are some properties are carbohydrates made up of? |
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Definition
they're sugars and starches
they're the structure for plants
they're a quick source of energy |
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Term
| What are some properties of lipids? |
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Definition
they water proof, insulate, and store energy long term
they make up the membrane
they're fats, oils, and steroids |
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Term
| What are some properties of proteins? |
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Definition
they make up muscles, hair, nails
they transport materials throughout the body
enzymes control chemical reactions |
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Term
| What are some properties of nucleic acids? |
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Definition
they store genetic information
examples: RNA & DNA |
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Term
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Definition
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