Hazardous materials are grouped into classes identifying their similarities in composition and structure.
<h3>Why hazardous materials are grouped into classes?</h3>
The hazardous materials are grouped into classes in order to tell us about the severity of hazard and it is done on the basis of similarity in composition.
So we can conclude that hazardous materials are grouped into classes identifying their similarities in composition and structure.
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Answer:
positive ion is a Cation while a negative ion is called an anion
Answer:
B
Explanation:
it will not be waterproof anymore
Answer:
oxide of potassium or potassium oxide i believe.
Answer: Selection proper
Explanation:
it's an anti-chance process, but subject to many constraints