RISE Science Grade 5 Practice Questions - RISE Science - Grade 5 Exam

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Sam has two unlabelled jars containing fine white powders. He wants to identify which jar contains iron filings mixed with salt and which jar contains powdered chalk mixed with sugar. Which combination of tests will best identify the powders without changing their chemical identities?

Testing for magnetic attraction and testing solubility in water. Heating both powders over a flame until they burn completely. Measuring the temperature of the dry powders with a thermometer. Checking if the powders float on top of olive oil.

Correct Answer:

Testing for magnetic attraction and testing solubility in water.

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