the term si system refers to
a. all units of measurement for speed
b. a method used to measure mass in grams
c. the international scientific units of measurement
d. a process for correctly using tools to make scientific measurements

The international scientific units of measurements

Explanation:SI units are units of measurement that are accepted and agreed upon globally as standard units of measurements.Examples include, meters(m) to measure length, kilograms(kg) to measure mass and seconds(s) to measure time among others.SI units can however, be converted to other units using multiplication factors. For example to convert kg to g we multiply the number of kg with 1000.  

False, as a substance changes from a solid to a liquid and from a liquid to a gas the molecules get farther apart from each other

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