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| the offspring of a zebra and a donkey. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| Main Entry: | physical change |
| Part of Speech: | n |
| Definition: | any process involving a substance's change from one state (gas, liquid, solid) to another without alteration of the chemical composition; cf. chemical change |
| Example: | Freezing water is a physical change because both water and ice are H2O. |
| Main Entry: | physical change |
| Part of Speech: | n |
| Definition: | See chemical change |