5-Int Cast 5 and 9 - 1/30 Do Now

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2 Nsɛmmisa

Students performed four different investigations. Which investigation best provided evidence that a new substance formed?

A. When water was added to milk, the liquid was easier to see through.

B. When water was poured into the sand, the sand sank to the bottom.

C. When powdered baking soda and apple juice were mixed, bubbling occurred.

D. When vegetable oil was poured into water, two layers formed.

A teacher fills a beaker with hot water and then adds a few drops of food coloring to the water in the beaker. The diagram shows what the students observe.

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Which is the best explanation for what the students see

A. The water particles get bigger. The food coloring particles do not change size.

B. The water particles destroy some of the food coloring particles when they collide.

C. The food particles shrink after some time. The water particles do not change size.

D. The water and the food coloring are made of tin particles that mix evenly after some time.