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Both mass and weight provide a measure of the amount of matter. Why is mass the preferred measure of the amount of matter?

What is the term for a prediction plus an untested explanation (proposal) that attempts to explain the observations made during preliminary experimentation?

What is the specific name of the state/phase change for the change of a liquid to a gas upon application of an additional artificial heat source?

Identify whether the following statement is a Theory or a Law: If the volume of a gas doubles, the pressure decreases by a factor of two when the temperature remains constant.

Identify the following as a metal, nonmetal or semimetal/metalloid:  arsenic (As)

What is the difference between a scientific theory and a natural law?

A sample of matter is heated. Explain in words what is happening to the sample of matter using the terms heat energy, motion/speed, kinetic energy and temperature. Right answer in complete sentences for full credit.  (4 points)

Determine whether the following statement is TRUE OR FALSE: Liquids have constant shape but do not have constant volume.

Best practice guidelines for the use of automatic exposure control include all of the following except1. set the optimum kV for the body part.2. set the backup timer to 150% of the expected manual exposure.3. set the highest mA station for the focal spot size needed.4. wide collimation will ensure IR coverage.

The exposure indicator number represents all of the following except the