A student is dissolving sugar in water to make candy. She notices that sugar lumps are forming at the bottom of the pan. What could she do to help more of the sugar dissolve?
1. Heat the solution
2. Cool the solution
3. Add more sugar to the pan
4. Take some water out the pan
Answers: 2
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Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?
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Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.
Answers: 1
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