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50 Cards in this Set
- Front
- Back
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Which is supported by a considerable amount of evidence and is widely accepted by the scientific community? |
Theory. |
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Which is the correct order from weakest to strongest? |
Hypothesis, theory, law. |
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The general public views the word theory with which definition? |
A lack of knowledge, or a guess. |
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In a certain experiment, group A was given a new painkilling pill while group B was given a sugar pill. In this experiment: |
The sugar pill is the placebo. |
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Which statement is true about the scientific method? |
Many hypotheses should be proposed. |
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Which is a property of ALL life forms? |
Contain DNA. |
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Who invented the periodic table? |
Dmitri Mendeleev. |
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Which is true about the charges of subatomic particles? |
Protons are positive. |
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What is found in the nucleus of an atom? |
Neutrons and protons. |
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How many valence electrons does does carbon have? |
4. |
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How many protons does nitrogen have? |
7. |
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How many valence electrons does lithium (atomic #3) have? |
1. |
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How many electrons does fluorine (atomic #9) need to complete its outer energy level? |
1. |
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Which is true about ionic compounds? |
Iconic compounds are held together by ionic bonds. |
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No electrons are shared or transferred in this type of bond. |
Hydrogen bond. |
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A type of bond where both atoms exert the same pull on shared electrons. |
Nonpolar covalent bond. |
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Which is a water molecule that has lost one proton? |
OH- |
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Which is a hydroxide ion? |
OH- |
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Which substance releases hydrogen ions in water? |
Acid. |
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The H+ concentration is higher than the OH- concentration in which substance? |
Acid. |
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Which is the most alkaline? |
pH 12. |
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What is the range of the pH scale? |
0-14. |
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Which has the highest OH- concentration? |
pH 12. |
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Which has the lowest H+ concentration? |
pH 12. |
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What is the difference in H+ concentration between pH 2 and pH 5? |
1000x |
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Cellulose is made from which monosaccharide? |
Glucose. |
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Which is found in plant cell walls? |
Cellulose. |
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Which is a carbohydrate? |
Glucose. |
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What macromolecule is made from monosaccharides? |
Polysaccharides. |
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What subunits are used to make proteins? |
Amino acids. |
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Which is a protein? |
Hemoglobin. |
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Which is true about dehydration synthesis? |
Water is removed from the subunits while they are joining. |
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What kind of molecule is represented by figure #3.2? |
Monosaccharide. |
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What is the name of the boxed functional group in figure #3.2? |
Aldehyde. |
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How many hydroxyl groups are found in figure #3.2? |
5. |
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Which is a food storage polysaccharide found in animals? |
Glycogen. |
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How many fatty acids are found in one phospholipid? |
2. |
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Which tends to be a solid at room temperature and has only single bonds between the carbon atoms in the fatty acid tails? |
Saturated fats. |
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How many molecules of glycerol are in one triglyceride molecule? |
1. |
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How many different amino acids are found in most living cells? |
20. |
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ALL amino acids have which of the following? |
An amino group and a carboxyl group. |
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What is the name of the this functional group: R-CH3? |
Methyl. |
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What is the molecular formula for glucose? |
C6H12O6 |
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Which macromolecule might contain the subunit glycine? |
Proteins. |
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Which is a lipid? |
Phospholipid. |
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Which is a nucleus acid? |
DNA. |
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Propylene (C3H6) contains: |
One double bond. |
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Formaldehyde (CH2O) contains: |
One double bond. |
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Glycerol (C3H8O3) contains: |
Only single bonds. |
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Methyamine (CNH5) contains: |
Only single bonds. |
