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Are the stuff that make up our bodies, the bodies of other organisms and the physical environment |
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Life's chemistry is tied to water |
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Life first evolved in water |
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the chemical reactions of your body occur in cells consiting of... |
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Organisms are compoised of _______ in combinations called_______ |
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Living organisms are composed of _____ which is anything that occupies and has mass |
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Matter is composed of chemical______ |
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Cannot be broken down to other substances |
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An element is a substance that ______ |
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How many elements are in nature |
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Two or more different elements |
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A compund is a subtance made from_______ in a fixed ratio. |
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is a common compund of equal parts of sodim and chlorine |
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How many elements are esstential to life |
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Oxygen, carbon, hydrogen, and nitrogen |
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Four elements make up about 96% of the weight of most living organisms. These are... |
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Looking to hook up elements |
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Only esstential for needed minutes |
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