Term
| Chemical formula for water |
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Definition
| H2O where the 2 is a subscript |
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Term
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Definition
| Molecules with an unequal charge distribution across their covalent bonds |
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Term
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Definition
| Molecules with an unequal charge distribution across their covalent bonds |
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Term
| Why is water a polar molecule? |
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Definition
| Because the oxygen atom has a stronger affinity or attraction for the electrons found in the covalent bond between it and H. The negative electrons spend more time around the O atom |
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Term
| Describe this unequal charge distribution |
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Definition
| The O atom in water has a slight negative charge and the H atoms have a slight positive charge. |
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Term
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Definition
| A weak attraction between the slightly positive H atom of one water molecule and the slightly negative O atoms of another water molecule. |
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Term
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Definition
| A combination of two or more substance in which each substance retains its individual characteristics and properties. |
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Term
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Definition
| A mixture with a uniform composition throughout |
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Term
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Definition
| The substance that is being dissolved in a solution; the salt in a salt water solution |
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Term
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Definition
| The substance doing the dissolving; the water in a salt water solution |
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Term
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Definition
| A measure of the acidity of H ion concentration of a solution |
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Term
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Definition
| A way of measuring the relative strength of acids and bases; it ranges from 0 to 14 |
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Term
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Definition
| A solution with excess H ions |
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Term
| What is an acidic pH value? |
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Definition
| Any pH value from 0 to 7; the low numbers on the pH scale |
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Term
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Definition
| A pH of 7. The amount of H ions and OH ions is in balance. |
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Term
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Definition
| Anything above 7, up to 14 |
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Term
| Name some acidic liquids that are commonly found in our homes |
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Definition
| Most acidic = battery acid, then stomach acid, lemon juice and vinegar, orange juice, tomatoes |
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Term
| Name some basic liquids that are commonly found in our homes |
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Definition
| Most basic = Sodium hydroxide (NaOH), oven cleaner or lye, soapy water, ammonia, baking soda |
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Term
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Definition
| Mixtures that react with water and help solutions resist changes in pH. The help keep the pH of a solution at a constant level |
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