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| Electrons are ___ by one element and ___ by another |
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| Loss/gain are due to the number of ____ electrons and element stability |
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| Elements want an outer shell of ____ electrons |
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| chemical bond that results from the sharing of electons |
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| Sharing bonds cannot exceed ___ or go any greater |
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| Covalent bonds result in the formation of ___ |
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| unequal sharing of electrons |
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| Polar molecules sometimes result in some atoms having a ___ ____ charge and others having a ___ ____ charge |
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Definition
| slight positive; slight negative |
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Definition
| causes attraction of slight positive and negative charges between 2 or more polar molecules (water) |
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| uniform mixture of 2 or more substances |
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| Solutions have two components, ___ ___ |
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| solute (substance being dissolved), solvent (substance doing the dissolving) |
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| molecules sticking to one another to create surface tension |
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| a compoud that releases hydrogen ions (H+) in water |
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| a compound that produces hydroxide ions (OH-) |
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| compounds that yield ions other than hydrogen and hydroxide |
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| the degree or range of acidity (power of hydrogen) 7 is neutral |
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| first form of energy the body uses |
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| sugars, starches, cellulose |
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| Stores a ___ amount of energy |
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| single sugars, such as glucose, galactose and fructose |
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| 2-single sugars linked together, such as sucrose and lactose |
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| many sugars bonded together, such as starch and cellulose in plants and glycogen in animals |
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| second form of energy the body turns to |
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| Long term storage reserve of ___ amounts of energy |
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| fats, oils, waxes, phospholipids, and steroids |
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| __ and ___ provide long term energy storage, also act as insulation |
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| provide protection and repel water |
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| structural and control functions (cholestrol and hormones) |
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| large, complex molecules composed of amino acids |
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| There are __ different amino acids in the body |
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