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The Science of Molecular Formulas

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Questions and Answers

Which of the following is the correct formula for potassium chloride?

K2Cl2
KCl2
K1Cl1
KCl (correct)

What is the charge of the chloride anion?

+1
+2
-1 (correct)
-2

What is the subscript of potassium in the formula for potassium chloride?

2
3
0
1 (correct)

What is the subscript of chloride in the formula for potassium chloride?

1 (C) Signup and view all the answers

Why is the subscript of potassium and chloride not explicitly written in the formula for potassium chloride?

Because it is implied that there is one atom of each element (C) Signup and view all the answers

Which of the following best describes a molecular formula?

A combination of elements and quantities that make up a molecule (C) Signup and view all the answers

What does the subscript in a molecular formula indicate?

The quantity of atoms of each element (C) Signup and view all the answers

If you add one more oxygen atom to an oxygen molecule, what would you get?

O3 (C) Signup and view all the answers

What is the molecular formula for ozone?

O3 (C) Signup and view all the answers

What does the text compare elements to in the context of cooking?

Ingredients used in cooking (D) Signup and view all the answers

Which of the following is the molecular formula for glucose?

C6 H12 O6 (A) Signup and view all the answers

What does a numerical coefficient in front of a molecular formula indicate?

The quantity of molecules present (D) Signup and view all the answers

What is the molecular formula for caffeine?

C8 H10 N4 O2 (C) Signup and view all the answers

What is the formula for the ionic compound sodium chloride?

NaCl (B) Signup and view all the answers

What is the formula for the ionic compound magnesium nitride?

Mg3 N2 (A) Signup and view all the answers