Physical or Chemical Change?

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What is a chemical change?

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A chemical change is a process where a substance transforms into one or more different substances, involving a change in chemical composition. Examples include burning wood and mixing baking soda with vinegar.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

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What is a physical change?

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A physical change is a process that alters the form or appearance of a substance but does not change its chemical composition. Examples include melting ice and freezing juice.

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What happens during burning wood?

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Burning wood is a chemical change because it produces new substances such as ash, smoke, and gases.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

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What is an example of a physical change?

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Melting ice is an example of a physical change, as it changes from solid to liquid but remains water.

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NGSS.MS-PS1-4

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What occurs when ice melts?

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When ice melts, it undergoes a physical change from solid to liquid without changing its chemical structure.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

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What is the result of mixing baking soda and vinegar?

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Mixing baking soda and vinegar results in a chemical change, producing carbon dioxide gas and new substances.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

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What defines a substance that changes shape but remains the same?

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A physical change describes a substance that changes shape, form, or appearance but is still the same substance.

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Is freezing juice a physical or chemical change?

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Freezing juice is a physical change because it changes from liquid to solid without altering its chemical composition.

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NGSS.MS-PS1-4

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What is an example of a chemical change?

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An example of a chemical change is the reaction between baking soda and vinegar, which produces new substances.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

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How can you identify a chemical change?

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A chemical change can often be identified by the production of gas, a change in color, or the formation of a precipitate.

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NGSS.MS-PS1-2