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26 Cards in this Set
- Front
- Back
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What is true about a hypothesis? |
E. All of these are true except A A. a hypotheses and a theory are the same thing B. a hypothesis is a potential answer to a scientific quetion C. a hypothesis must be testable D. a hypothesis must be falsifiable E.All of these are true except A |
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When we measured the height of students in lab, this was an example of: |
Collecting quantitative data about that student population |
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All of the aspen trees in an isolated geographical area in Colorado constitute the _____level of biological organization. |
Population |
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What is the atomic number of sodium? |
11 |
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What is the mass of the most common isotope of Li in amu? |
7 |
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How many valence electrons does Nitrogen have? |
5 |
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How many neutrons does 13^C have? |
7 |
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How many electrons does Mg^2+ have? |
10 |
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How many bonds does carbon typically make? |
4 |
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In a bond with a nonmetal, a metal will typically: |
Lose its valence electrons and become a positively charged ion |
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Which of the following pairs of elements are likely to forma POLAR covalent bond? A. K and CL B. K and K C. Cl and Cl D. C and Cl |
C and Cl |
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Which of the following pairs of elements would bond to form a SALT? A. K and CL B. K and K C. Cl and Cl D. C and Cl |
K and Cl |
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Diagram: The ___________are the reactants? |
Agl and |
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Correct balanced equation? |
2Agl+Na2S----------> Ag2S +2 Nal |
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What would 1 mole of Agl weigh? |
235g |
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To make instant coffee, I put a scoop of instant coffee powder into a cup of water and stir. The instant coffee powder is the _________in this example. |
solute |
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What is the most likely formula for a compound made from Ca and Br? |
CaBr2 |
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Which forms H bonds? |
Two ethanol molecules |
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Which of the following are organic molecules? |
CH4 |
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Ethane is a gas at room temperature because? |
It is a non-polar molecule |
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Why does adding a hydroxyl group to ethane to make ethanol cause it to become a liquid at room temperature? |
It forms H bonds with other ethanol molecules |
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Diagram: These similar, but different molecule are most appropriately referred to as: |
Structural isomers |
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Diagram: The functional group found on each of these molecules is a: |
hydroxyl |
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Diagram: These molecules could both be named as: |
Propanol |
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Which of the following is a phosphate functional group? a. PO b. P c. PO d. POH e. PO H
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PO |
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Carboxyl is an acidic functional group because |
It can release H+ into the solution |
