Final answer:
To show that matter has mass, you can use a balance scale to compare the mass of objects. If the scale balances, it confirms that matter has mass.
Step-by-step explanation:
To show that matter has mass, you can perform a simple experiment using a balance scale. Place an object of known mass on one side of the scale, and the object you want to test on the other side. If the scale balances, it indicates that both objects have the same mass, confirming that matter has mass. For example, if you place a 100-gram weight on one side and the object you are testing on the other side, and the scale balances, it means that the object also has a mass of 100 grams.
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