Answer:
a.
Explanation:
because
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It's called a compound because different elements are held together by a chemical bond.
Answer:
Has size and magnitude whereas a scalar quantity has only size
Answer:
because of the small soot particles
H2O is the chemical formula of water. It means that each molecule of water is made up of two hydrogen atoms, indicated by the letter H, and a single oxygen atom, represented by the O. Water is a chemical substance with no smell, taste, or color.