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21 Cards in this Set
- Front
- Back
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Saturated fat |
A lipid made from fatty acids that have no double bonds between carbon atoms |
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Physical change |
A change that affects the appearance but not the chemical makeup of a substance |
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Model |
An explanation or representation of something that cannot be seen |
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Isomers |
Two different molecules that have the same chemical formula |
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A student reports on an atom that has 11 protons, 10 neutrons and 10 electrons. What is wrong? |
An atom must have the same number of protons and electrons |
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Two atoms have the same number of neutrons but different numbers of protons. Do they belong to the same element? |
No, Atoms of the same element must have the same number of protons(also electrons). |
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The element sulfur is comprised of all atoms that have 16 protons. How many neutrons are in sulfur-34? |
There must be 18 neutrons. (16 protons plus 18 neutrons = 34 |
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What are the 4 things necessary for photosynthesis? |
Carbon dioxide, water, energy from the sun, and a catalyst |
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P (element or molecule) |
Element |
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N2 (element or molecule) |
molecule |
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oxygen-16 (element or molecule) |
atom |
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PH3 (molecule or atom) |
molecule |
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When you boil water are you causing a physical or chemical change? |
Physical All phase changes are physical |
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Two solutions of different solute concentrate are separated by a membrane. After 1 hour, the solutions are of equal concentrations. The water level are the same as when you started. Diffusion or osmosis? |
Diffusion |
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In the following carbohydrate, what is the value of x? C7HxO2 |
x=4 (remember in a carbohydrate the ratio of H/O must be the same as water 2/1) |
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Solution with pH of 1.5 (acidic or alkaline) |
Acidic |
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Solution with a pH of 7.1 (acidic or alkaline) |
Alkaline |
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Solution with a pH of 13.2 (acidic or alkaline) |
Alkaline |
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What determines the properties of a protein? |
type, number, and order of amino acids linked together |
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What part of the neucleotide is responsible for the way DNA stores its information? |
The nucleotide's base is what determines the "Morse code" of DNA |
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What holds the two helixes in DNA together? |
Hydrogen bonding between the bases holds DNA's double helix together |
