$$\frac{10}{100} \times 100 = 10\%$$

$$\frac{5}{100} \times 100 = 5\%$$

Question 1

Which of the following best describes an ionic compound?

Accepted Answer

A compound consisting of a metal and a nonmetal, held together by electrostatic attraction between ions.

Question 2

Which of the following is most likely to be soluble in water?

Accepted Answer

An ionic compound such as NaCl.

Question 3

What type of bond is formed when electrons are transferred from one atom to another?

Accepted Answer

Ionic bond

Question 4

Which of the following compounds is covalent?

Accepted Answer

CO\_2

Question 5

A solution is made by dissolving 10 grams of KCl in 90 grams of water. What is the percent by mass of KCl in the solution?

Accepted Answer

$$\frac{10}{100} 	imes 100 = 10\%$$

Question 6

Which statement about the electrical conductivity of ionic and covalent compounds is correct?

Accepted Answer

Ionic compounds conduct electricity when dissolved in water.

Question 7

Which of the following best explains why sugar (C\_6H\_12O\_6) does not conduct electricity when dissolved in water?

Accepted Answer

Sugar is a covalent compound and does not form ions in solution.

Question 8

Which of the following is the correct order from MOST to LEAST mass for the following: element, atom, compound?

Accepted Answer

Compound \u003e Element \u003e Atom

Question 9

A solution contains 5 grams of MgCl\_2 dissolved in 95 grams of water. What is the percent by mass of MgCl\_2 in the solution?

Accepted Answer

$$\frac{5}{100} 	imes 100 = 5\%$$

Question 10

Which of the following best describes a saturated solution?

Accepted Answer

A solution that contains the maximum amount of solute that can dissolve at a given temperature.

Question 11

Which of the following compounds is most likely to have a high melting and boiling point?

Accepted Answer

NaCl (sodium chloride)

Question 12

Which of the following is a property of covalent compounds?

Accepted Answer

They have low melting and boiling points.

Question 13

Which of the following best describes the process of dissolving NaCl in water?

Accepted Answer

NaCl dissociates into Na\^+ and Cl\^- ions, which are surrounded by water molecules.

Question 14

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

Accepted Answer

CaBr\_2

Question 15

If the concentration of a solute in water is increased, what happens to the solution?

Accepted Answer

The solution becomes more concentrated.

Question 16

Which of the following is true about the solubility of ionic compounds in water?

Accepted Answer

Ionic compounds are generally soluble in water due to the attraction between ions and water molecules.

Question 17

Which of the following best describes the difference between an atom and an element?

Accepted Answer

An element is a pure substance made of only one kind of atom.

Question 18

Which of the following is always listed first in the formula of an ionic compound?

Accepted Answer

The metal

Question 19

Which of the following best describes the process of increasing the concentration of a salt and water solution?

Accepted Answer

Add more salt to the solution.

Question 20

A solution contains 0.013 grams of manganese in 1000 grams of water. What is the concentration of manganese in ppm?

Accepted Answer

$$\frac{0.013}{1000} 	imes 10^6$ = 13\ ppm$$

Ionic vs. Covalent Compounds and Solubility: Study Guide

스터디 가이드 - 연습 문제