Question

a shorthand that uses chemical symbols and subscripts to represent the composition of a substance is known as a chemical...
select one:
○ a. bond.
○ b. compound.
○ c. formula.
○ d. ratio.

in one molecule of the compound bacl₂ there are a total of how many atoms?

select one:
○ a. 3
○ b. 4
○ c. 7
○ d. 9

Explanation:

For the first question: A chemical bond is a force holding atoms together, a compound is a substance made of multiple elements, a ratio is a proportional relationship, while a chemical formula uses symbols and subscripts to show a substance's composition.
For the second question: In $\text{BaCl}_2$, the subscript 2 indicates 2 chlorine atoms, plus 1 barium atom, so sum the atom counts.

Answer:

1. c. formula.
2. a. 3