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before using any chemical in the lab, why should one first read the material safety data sheet (msds)?
this is important for laboratory safety
the msds tells where to purchase chemicals
the msds provides the chemical formulas
this is important for analyzing experiments

This is important for laboratory safety.

Explanation:

It is important to read the Material Safety Data Sheet because it will inform you on what is being used in the lab and what to do/what not to do when chemicals or any materials are being involved.

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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