science - Physical and chemical changes
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Created by:
i_am_awesomee on April 2, 2012
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Maggie's science objectives
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15 terms
Terms | Definitions |
|---|---|
 dry ice | solid carbon dioxide.a cloud of gas surrounds it. it changes directly from a solid to a gas without becoming a a liquid first |
| solution | a mixture that has one substance dissolved in another substance. |
| heating a solution | causes the solid to completely dissolve in a liquid. |
| cooling a solution | causes the solid particles to separate from the liquid. |
| warmed | when soft drinks are ______ , the gas particles escape easily. |
| cooled | when soft drinks are ________, there is more attraction between the gas particles and the liquid particles. |
| physical change | a change in the size or shape of matter. During this, the particles may be rearranged but the particles themselves do not change. |
| state the 2 most common types of physical changes: | 1. dissolving solid and liquid 2. change of state |
| name 6 examples of physical changes | chopping wood, tearing paper, peeling an orange, breaking a vase, cutting a carrot, crushing a bag of chips. |
| distillation | a method of separating a pure liquid from a mixture. |
| rebersible changes | changes in matter that go backward and forward. \they are usually, but not always, physical changes. |
| non-reversible changes | changes in matter that are not reversible; cannot bring matter back into its original state. |
| chemical change | change of matter that produces a new substance, baking a cake is an example of this change. this change can be detected by a change in colour, size, shape, bubbles, a new smell or fizz. |
| chemical change | evidence of this change includes change in mass, heat/light is given off, bubbles, fizz, smell, burning, gas given off |
| chemical change | occurs when new materials are made that were not there before. |
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