Describe each type of matter as a pure substance (element), pure substance (compound), or mixture

Matter can be broken down into two categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds. ... A chemical substance is composed of one type of atom or molecule. A mixture is composed of different types of atoms or molecules that are not chemically bonded.

millisievert (mSv).

The units of measure for radioactivity are the curie (Ci) and becquerel (Bq).

1,000.00 millisievert is not fatal.5,000.00 millisievert is deadly.

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