✅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.

What substance is the solute?

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.

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

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

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