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Free Practice Quiz Question List

3 Bonds and Compounds Online Quiz Questions

Use this free practice quiz with 20 questions to review 3 Bonds and Compounds, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

In potassium nitrate, KNO3\mathrm{KNO_3}, which description correctly identifies the bonding between potassium and nitrate and the bonding within a nitrate ion?

  1. A

    Both the attraction between potassium and nitrate and the bonds within nitrate are metallic.

  2. B

    Potassium and nitrate ions attract ionically, and nitrogen and oxygen are joined covalently within nitrate.

  3. C

    Potassium and nitrate share electrons covalently, and nitrogen and oxygen are joined ionically.

  4. D

    All the bonds in potassium nitrate are covalent.

02
True or false
1 point

Oxygen gas, O2\mathrm{O_2}, is a molecule but not a compound because it contains only one element.

  1. A

    True

  2. B

    False

03
Choose one
1 point

Which statement best describes metallic bonding?

  1. A

    Metallic bonding prevents metals from conducting electricity.

  2. B

    Metallic bonding holds a metal together by transferring electrons to a nonmetal.

  3. C

    Metallic bonding involves attractions associated with mobile, shared electrons among many metal atoms.

  4. D

    Metallic bonding occurs only in discrete pairs of atoms.

04
Choose one
1 point

Magnesium forms Mg2+\mathrm{Mg^{2+}} ions and chlorine forms Cl−\mathrm{Cl^-} ions. Which formula represents the simplest neutral ratio of these ions?

  1. A

    MgCl2\mathrm{MgCl_2}

  2. B

    Mg2Cl\mathrm{Mg_2Cl}

  3. C

    MgCl\mathrm{MgCl}

  4. D

    Mg2Cl2\mathrm{Mg_2Cl_2}

05
Choose all
1 point

Select all statements that accurately describe covalent bonding.

  1. A

    Covalent bonds involve atoms sharing pairs of electrons.

  2. B

    Covalent bonds are common between nonmetals.

  3. C

    Unequal sharing in a covalent bond makes it polar covalent.

  4. D

    Covalent bonding is defined by transferring electrons to form oppositely charged ions.

06
True or false
1 point

In a chemical formula, an element symbol with no subscript represents one atom of that element.

  1. A

    True

  2. B

    False

07
Choose all
1 point

Select all statements that correctly compare molecular and empirical formulas.

  1. A

    A molecular formula gives the actual number of each type of atom in a molecule.

  2. B

    An empirical formula gives the simplest whole-number ratio of atoms.

  3. C

    For glucose, C6H12O6\mathrm{C_6H_{12}O_6} reduces to the empirical formula CH2O\mathrm{CH_2O}.

  4. D

    A molecular formula always has smaller subscripts than its empirical formula.

08
Written response
1 point

How many oxygen atoms are represented by two formula units of Ca(NO3)2\mathrm{Ca(NO_3)_2}?

09
Written response
1 point

What term describes the simplest whole-number ratio represented by the formula of an ionic solid such as NaCl\mathrm{NaCl}?

10
Fill in the blank
1 point

In 3H2O\mathrm{3H_2O}, the 3 in front of the formula is the .

11
Fill in the blank
1 point

In one formula unit of Ca(NO3)2\mathrm{Ca(NO_3)_2}, there are nitrate groups.

12
Open ended
1 point

Glucose has molecular formula C6H12O6\mathrm{C_6H_{12}O_6}. Explain how to obtain its empirical formula and state that formula.

13
Choose one
1 point

Which statement correctly classifies water, H2O\mathrm{H_2O}, and oxygen gas, O2\mathrm{O_2}?

  1. A

    Water is a compound but not a molecule; oxygen gas is both.

  2. B

    Water is both a molecule and a compound; oxygen gas is a molecule but not a compound.

  3. C

    Both water and oxygen gas are compounds, but only water is a molecule.

  4. D

    Both water and oxygen gas are molecules and compounds.

14
Written response
1 point

How many atoms altogether are in four molecules of CO2\mathrm{CO_2}?

15
Written response
1 point

What type of bonding involves attractions associated with mobile, shared electrons across a metal?

16
Choose one
1 point

Two atoms share electrons unequally. How is their bond classified?

  1. A

    Ionic

  2. B

    Polar covalent

  3. C

    Metallic

  4. D

    Nonpolar covalent

17
Choose one
1 point

A stable arrangement of positive and negative ions is held together by attraction. Which statement best explains why that attraction qualifies as a chemical bond?

  1. A

    A force that pushes particles apart, whether or not they remain together

  2. B

    An attractive interaction that holds atoms or ions together in a stable arrangement

  3. C

    Any arrangement that contains atoms of two or more elements

  4. D

    A transfer of electrons that must occur between every pair of atoms

18
Choose one
1 point

A neutral chlorine atom gains an electron from a neutral sodium atom. What happens to the charge of each atom?

  1. A

    Chlorine becomes positive, and sodium becomes negative.

  2. B

    Both atoms become positive.

  3. C

    Chlorine becomes negative, and sodium becomes positive.

  4. D

    Neither atom's charge changes.

19
Choose one
1 point

A student observes that a substance contains a metal and a nonmetal and concludes that its bonding must be ionic. Which evaluation is best supported?

  1. A

    The conclusion is certain because every metal and nonmetal pair must form an ionic bond.

  2. B

    The conclusion is certain because metals can only form positive ions with nonmetals.

  3. C

    The conclusion is unsupported because ionic bonding occurs only between nonmetals.

  4. D

    The pairing suggests a common pattern, but it does not prove that ionic bonding must occur.

20
True or false
1 point

Every substance made from a metal and a nonmetal must be held together by ionic bonding.

  1. A

    True

  2. B

    False