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17 Cards in this Set
- Front
- Back
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What is an element? |
an element is the basic building block of life and cannot be broken into simpler substances |
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What are compounds? |
compounds are two or more elements chemically combined together |
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What are the properties of compounds? |
compounds do not have the same Properties as their constituents Combined in a fixed proportion Can be broken down into elements by chemical means |
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What is the mixture? |
A mixture is made up of compounds and 2 or more elements not chemically combined together |
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What are the properties of mixtures? |
A mixture has the same characteristics as its constituents combined in the not fixed proportion can be separated by physical means |
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what is a solvent and solute? |
solute is usually a solid which dissolves on solvent solvent is usually liquid in which a solute is dissolves-in |
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A lot of solute, ———— solution and vice versa |
concentrated; diluted |
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What is a solution? |
The solution is a mixture in which the solute completely dissolves in the solvent |
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What affects the rate of dissolving? |
- size of solute particles - temp of solvent - rate of stirring |
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The ———— the temperature/rate of stirring the ————- the solute can dissolve in it. |
higher; faster |
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The ———— the particle size, the faster the solute you can dissolve |
smaller |
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What is solubility? |
How well a solute can dissolve in a fixed amount of solvent |
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What is the suspension? |
A suspension is a mixture which contains insoluble substances |
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what are the differences between a solution and a suspension? |
- In a solution particles cannot be seen while in the suspension particles can be seen - In a solution light can pass through easily while in the suspension light cannot pass through easily |
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What is the property of a pure substance? |
Has a fixed melting point and boiling point |
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A compound is a ———— substance, a mixture is a ——— substance |
pure; impure |
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What affects solubility? |
nature of solute/solvent |
