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a compound that donates H+ ions to a solution; pH <7 |
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a compound that removes H+ ions from aqueous solution or donates OH-; pH >7 |
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describes how acidic or basic a solution is |
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pure substance made of only one kind of atom |
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What are the four main elements in living things? |
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Hydrogen, Oxygen, Nitrogen, Carbon |
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What are the additional four elements in living things? |
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Potassium, Phosphorus, Sulfur, Calcium |
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an atom or molecule with a charge |
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atoms with different numbers of neutrons |
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have unstable nuclei that break down over time, emitting particles |
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isotopes that break down quickly |
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tow or more atoms that are chemically combined |
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when one atom gives an electron (or more) to another atom. The resulting atoms become tons and are attracted to each other |
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when atoms share electrong, allowing the outermost shells of both atoms to be filled; stronger than ionic bonds |
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attraction between a partially positive and negative other atom |
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when electrons are shared unequally, one atom is partially negative, while the other is partially positive. |
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water molecules stick to each other with hydrogen bonds |
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liquid water keeps its shape because the molecules stick to one another |
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polar water molecules atick to polar water molecules in other substances |
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the tendency of water to move uo (against gravity) a substance due to adhesion |
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a chemical that lowers the surface tension of a liquid (works because of hydrophobis and a hydrophilic end) |
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a chemical that lowers the surface tension of a liquid (works because of hydrophobis and a hydrophilic end) |
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water fearing (non-polar, oil) |
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water loving (polar, glass, salt) |
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simple sugar, monosaccharide |
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carbohydrates, polysaccride |
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all lipids are hydrophobic |
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has mass and volume and is recycled by decomposers |
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positive charge, 1 amu, found in the nucleus |
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0 charge, 1 amu, found in nucleus |
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negative charge, 0 mass, found in electron ring |
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C6H12O6 Examples: glucose, fructose, galacose |
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1. polymer of glucose 2. used in how glucose is found in plants 3. lots found in root vegetables like potatoes |
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1. polymer of glucose 2. how glucose is stored in animals 3. found in the liver and in muscle tissues |
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1. polymer of glucose 2. major structural material in plants found in plant cell walls 3. indigestible by humans and other animals 4. used to make: wood, cotton, and paper |
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1. type of lipid made of four rings 2. used for hormones, estrogen, testosterone, and cholesterol |
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1. Amine Group 2. Central Carbon attached to Hydrogen 3. Carboxylic Acid Group 4. R Group |
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