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31 Cards in this Set
- Front
- Back
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What is matter? |
Anything that has mass and takes up space. |
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What are the three states of matter? |
Solid, liquid, and gas. |
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Define Solid |
A form of matter that has a definite shape and volume. |
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Define liquid |
A form of matter that has an indefinite shape, flows, yet has a fixed volume. |
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Define Gas |
A form of matter that takes both the shape and volume of its container. |
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An intensive property depends on... |
the type of matter in a sample. |
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An extensive property depends on... |
the amount of matter in a sample. |
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Temperature, color, hardness, melting point, boiling point, pressure, molecular weight, and density are... |
Intensive properties |
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Mass, volume, length, and total change are... |
Extensive properties |
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Physical properties... |
Can be measured without altering the material. |
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Chemical properties... |
Describe a substance ability to undergo specific chemical reactions. |
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Color, mass, and hardness are examples of... |
Physical properties |
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Flammability and solubility are examples of... |
Extensive properties |
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During a Physical change... |
Some properties of the material change, but the composition stays the same. |
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During a Chemical change... |
The composition is changed from one form to another. |
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Ice melting, water boiling, evaporation, solidifying, and dissolving are examples of... |
Physical changes |
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Rusting, combustion, burning, metabolism, and mixing acid with a base are examples of... |
Chemical changes |
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Define hypothesis |
A prediction of how the experiment will turn out. |
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An independent variable... |
Is purposefully changed. |
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A dependent variable is... |
Changed in response to the independent variable. |
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How many variables should there be in a good experiment? |
2 |
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What does a control do? |
Gives a standard to compare tests to. |
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Qualitative observations are... |
What you perceive to happen during the experiment. |
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Quantitative observations are... |
Based on numerical data gathered during tests. |
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Define element |
Simplest form of matter that has a unique set of properties. |
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Define compound |
A substance that contains two or more elements. |
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Define heterogenous mixture |
Composed of two or more substances which are not evenly distributed. |
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Define homogenous mixture |
Composed of two or more substances which are evenly distributed. |
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Define filtration |
Separates components based on particle size. |
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Define Distillation |
Separates components based on difference in boiling point. |
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Define Decantation |
Separates components based on difference in density. |
