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A tentative thought- or experiment-derived explanation is known as a

Millikan found that all of the oil droplets in his apparatus carried a charge that was an integer multiple of one particular value.

A theory is a hypothesis that has been shown to be correct by many experiments.

The in R-COOH or R-C=O stands for

The mathematical product amp

Temperature is a measure of the amount of heat stored in a substance.

How heavy an object is the property known as mass.

Total internal reflection

If the force of attraction between the ions in a solid is very strong, you would expect the solid to have

An energy resource that is only available in a limited amount.