Term
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Definition
| Using electricity to break a molecule down to it's constituent elements. |
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Term
| Are protons positive or negative? |
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Definition
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Term
| Are electrons positive or negative? |
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Definition
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Term
| What is a polar molecule? |
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Definition
| A molecule that has slight positive and negative charges due to an imbalance in the way electrons are shared. |
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Term
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Definition
| A liquid substance capable of dissolving other substances. |
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Term
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Definition
| A substance that is dissolved in a solvent. |
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Term
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Definition
| The phenomenon that occurs when individual molecules are so strongly attracted to each other, even when exposed to tension. |
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Term
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Definition
| Water that has certain dissolved ions in it, predominately calcium. |
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Term
| If you did experiment 4.1 on hydrogen peroxide, who's chemical formula is H2O2. Would the results be same as water, equal amounts of hydrogen and oxygen, or twice as much oxygen as hydrogen. |
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Definition
| Equal amounts of hydrogen and oxygen. |
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Term
| If you did experiment 4.1 and the test tube that's holding the hydrogen has a crack in it, so some of the gas can leak out. What chemical formula would you have, HO or H4O? |
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Definition
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Term
| The chemical formula of Epsom salts is MgSO4. If Mg is magnesium, S is sulfur, and O is oxygen, how many of each are in epsom salt. |
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Definition
| 1 magnesium, 1 sulfur, and 4 Oxygen. |
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Term
| How many molecules are in NH3? |
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Definition
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Term
| A molecule is composed of atoms that all pull on electrons withe same strength. Will it be polar? |
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Definition
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Term
| Which has more molecules a liter of water, or a liter of ice? |
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Definition
| Water, but that is not so for substances other than ice. |
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Term
| Baking soda dissolve in water. Will it dissolve in vegetable oil, which is a nonpolar substance? |
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Definition
| Baking soda will not dissolve in vegetable oil. |
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Term
| If a molecule has one calcium atom (Ca), one carbon atom (C), and three oxygen atoms (O), what is its chemical formula? |
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Definition
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Term
| Carbon tetrachloride will not dissolve in water. Is it made of ionic molecules, polar molecules, or nonpolar molecules? |
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Definition
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Term
| What is responsible for water being a liquid at room temperature as well as water's cohesion? |
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Definition
| Hydrogen bonding is responsible. |
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Term
| What causes surface tension. |
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Definition
| Cohesion causes surface tension. |
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Term
| Why is water harder in certain regions of the world than others? |
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Definition
| Water is harder in certain regions of the world because there is a higher amount of calcium containing substances than others. |
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