Term
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Definition
| pure substance that can't broken down into simpler substances, if do, will lose its properties |
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Term
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Definition
| made up of elements (anything takes space and has mass) combination of elements |
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Term
| 4 elements that make up of 96% of living organisms |
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Definition
| carbon, hydrogen, oxygen, nitrogen |
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Term
| how much Iodine do we humans need? |
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Definition
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Term
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Definition
| 1 element, each atom has 3 sub particles, neg electrons, pos protons, uncharged neutrons |
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Term
| which sub particles are seen within atomic nucleus? |
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Definition
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Term
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Definition
| mass or proton and neutron |
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Term
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Definition
| number of protons in an element |
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Term
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Definition
| distinct forms of atoms of an element, same number of proton to different number of neutron, nuclei of some isotopes are unstable and breakdown (decay) giving matter off matter energy (radioactive) |
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Term
| hydrogen bonds in water forms that that affects its properties |
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Definition
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Term
| hydrogen bonds properties |
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Definition
| density, heat absorption, cohesion, surface tension |
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Term
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Definition
| contributes to the formation of distinct polar and nonpolar environments that are critical to the organization of the cells |
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Term
| water is the what to charged or polar molecules |
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Definition
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Term
| water molecules separate into |
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Definition
| hydrogen and hydroxide ions |
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Term
| water density do what when it freezes? |
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Definition
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Term
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Definition
| water molecule (stick) to each other due to hydrobond |
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Term
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Definition
| water molecule (stick) to other surfaces |
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Term
| how is cohesion and adhesion used in bio? |
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Definition
| they raise water from the roots to the top of the tree |
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Term
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Definition
| making water molecules at the surface more resistant to separation than the underlying water molecule |
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Term
| how is surface tension used in bio? |
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Definition
| form water droplets, support small insects and object |
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Term
| water molecules are able to from a what around the surfaces of other polar molecules and charged ions? |
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Definition
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Term
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Definition
| when molecules are separated in water. |
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Term
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Definition
| higher concentration of hydrogen ions |
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Term
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Definition
| higher concentration of hydroxide ions |
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Term
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Definition
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Term
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Definition
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Term
| what is used to make the pH stays constant? |
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Definition
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