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23 Cards in this Set
- Front
- Back
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What form of energy is the stimulus for vision |
Radiant |
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What are the four major elements contributing to body mass |
Hydrogen, carbon, nitrogen, and oxygen |
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What is the mass number of an atom |
The sum of its protons and neutrons |
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A deficiency in this element can be expected to reduce the hemoglobin content of blood |
Iron (Fe) |
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Describe a proton |
It has a positive charge, is 1 AMU, and held in the nucleus |
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What are the particles responsible for the chemical behavior of atoms |
Electrons |
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What form are carbohydrates stored in the body |
Glycogen |
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Describe a mixture |
Properties of its components are retained, components can be separated physically, includes both heterogeneous and homogeneous examples |
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In a beaker of water what are water- water bonds called |
Hydrogen bonds |
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What is the bond called when a pair of electrons is shared between two atoms |
A single covalent bond |
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What are molecules that are formed when electrons are shared unequally |
Polar molecules |
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What type of covalent bond is hydrogen chloride |
polar |
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What type of reaction is the following equation: 2Hg + O2 --> 2HgO |
A synthesis reaction |
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What type of reaction is the following equation: HCl + NaCl + H2O |
An exchange reaction |
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What are factors that accelerate the rate of chemical reactions |
The presence of catalyst, increasing temperature, increasing the concentration of the reactants |
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Sodium chloride is an inorganic molecule. What are some organic molecules |
Sucrose, cholesterol, collagen |
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Why is water important to living systems |
It's polarity and solvent properties, its high heat capacity, its high heat of vaporization, and its chemical reactivity |
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What releases protons when dissolved in water |
Acids |
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What is a chemical composed of carbon, hydrogen, and oxygen in the proportion 1:2:1 and having a six-sided molecular shape |
Monosaccharide |
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What does a triglyceride consist of |
Glycerol + 3 fatty acids |
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What is a chemical that has an amine group and an organic acid group, but does not have any peptide bonds |
An amino acid |
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What are lipids used as the basis of vitamin D, sex hormones and bile salts |
Cholesterol |
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What is an organic Catalyst that increases the speed of a chemical reaction |
Enzymes |
