Question 1

Which of the following statements best distinguishes between an ionic compound and a molecular compound?

Accepted Answer

Molecular compounds contain highly directional covalent bonds, resulting in the formation of molecules, while ionic compounds contain nondirectional ionic bonds, resulting in the formation of ionic lattices in the solid state.

Question 2

Which of the following is the correct empirical formula for a compound with a molecular formula of $$\mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6$$?

Accepted Answer

$$\mathrm{CH}_2\mathrm{O}$$

Question 3

A sample of a compound contains 40.00% carbon, 6.72% hydrogen, and 53.28% oxygen by mass. If the molar mass of the compound is $$180.16\ \mathrm{g/mol}$$, what is its molecular formula?

Accepted Answer

$$\mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6$$

Question 4

Which of the following compounds is an example of a molecular compound?

Accepted Answer

$$\mathrm{CO}_2$$

Question 5

What is the correct name for the compound $$\mathrm{FeCl}_3$$?

Accepted Answer

Iron(III) chloride

Question 6

Which of the following is the correct formula for calcium phosphate?

Accepted Answer

$$\mathrm{Ca}_3(\mathrm{PO}_4)_2$$

Question 7

What is the systematic name for $$\mathrm{N}_2\mathrm{O}_5$$?

Accepted Answer

Dinitrogen pentoxide

Question 8

Which of the following is a correct statement about polyatomic ions?

Accepted Answer

Polyatomic ions are groups of covalently bonded atoms with an overall charge.

Question 9

What is the correct name for $$\mathrm{Na}_2\mathrm{SO}_4 \cdot 10\mathrm{H}_2\mathrm{O}$$?

Accepted Answer

Sodium sulfate decahydrate

Question 10

Which of the following best describes the difference between a mixture and a compound?

Accepted Answer

A mixture contains elements in any proportion, while a compound contains elements in fixed, definite proportions.

Question 11

Which of the following is the correct formula for aluminum oxide?

Accepted Answer

$$\mathrm{Al}_2\mathrm{O}_3$$

Question 12

What is the correct name for $$\mathrm{H}_2\mathrm{SO}_3$$?

Accepted Answer

Sulfurous acid

Question 13

Which of the following is a diatomic molecular element?

Accepted Answer

$$\mathrm{O}_2$$

Question 14

A compound is found to contain 58.64% Cl and 41.36% C by mass. What is the empirical formula of the compound?

Accepted Answer

$$\mathrm{CCl}_4$$

Question 15

Which of the following is the correct name for $$\mathrm{CuSO}_4$$?

Accepted Answer

Copper(II) sulfate

Question 16

Which of the following is the correct formula for ammonium carbonate?

Accepted Answer

$$(\mathrm{NH}_4)_2\mathrm{CO}_3$$

Question 17

Which of the following is the correct name for $$\mathrm{HNO}_2$$?

Accepted Answer

Nitrous acid

Question 18

What is the molar mass of $$\mathrm{C}_2\mathrm{H}_6\mathrm{O} ($$ethanol)?

Accepted Answer

$$46.08\ \mathrm{g/mol}$$

Question 19

Which of the following is the correct name for $$\mathrm{P}_2\mathrm{O}_5$$?

Accepted Answer

Diphosphorus pentoxide

Question 20

Which of the following is the correct formula for magnesium nitrate?

Accepted Answer

$$\mathrm{Mg(NO}_3)_2$$

Molecules, Compounds, and Chemical Bonds: Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard