✅EVALUATE: Classification and Changes in Matter

Identify the following particle diagram as an element, compound, or mixture.

• element
• compound
• mixture

Identify the following particle diagram as an element, compound, or mixture.

• element
• compound
• mixture

Is the mixture homogeneous or heterogeneous? Explain how you know.

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What substance is the solute?

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What substance the solvent?

A friend tells you, “Because composition does not change during a physical change, the appearance of a substance does not change.” Is your friend correct? Explain.

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Give two pieces of evidence that support a chemical reaction occurred in the video.

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Predict the products of this reaction (in words). Include states of matter.

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Why does the blue color of the solution decrease as the reaction progresses?

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