Exploring Ionic and Covalent Bonds

What is the chemical formula for sodium chloride?

• NaCl

• NaO

• KCl

• NaCO₃

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VA.PS.3.c

Which of the following elements is most likely to form a covalent bond?

• Sodium (Na)

• Chlorine (Cl)

• Argon (Ar)

• Calcium (Ca)

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VA.PS.3.c

Identify the type of bond in a molecule of water (H₂O).

• Ionic

• Covalent

• Metallic

• Hydrogen

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VA.PS.3.c

Explain why ionic compounds tend to have high melting points.

• They have strong covalent bonds.

• They have weak intermolecular forces.

• They have strong electrostatic forces between ions.

• They have metallic bonds.

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VA.PS.3.c

Which of the following is a property of covalent compounds?

• High melting and boiling points

• Conduct electricity in solid state

• Low melting and boiling points

• Form crystal lattice structures

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VA.PS.3.c

Predict the type of bond that will form between magnesium (Mg) and oxygen (O).

• Covalent

• Ionic

• Metallic

• Hydrogen

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VA.PS.3.c

Compare the electron sharing in ionic and covalent bonds.

• Electrons are shared equally in both.

• Electrons are transferred in ionic and shared in covalent.

• Electrons are shared in ionic and transferred in covalent.

• Electrons are not involved in either.

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VA.PS.3.c

A compound is formed between element X and element Y. Element X has 1 valence electron, and element Y has 7 valence electrons. What type of bond is most likely formed?

• Covalent

• Ionic

• Metallic

• Hydrogen

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VA.PS.3.c

Design an experiment to determine whether a compound is ionic or covalent.

• Measure the melting point.

• Test solubility in water and conductivity of the solution.

• Observe the color of the compound.

• Measure the density of the compound.

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VA.PS.3.c

Analyze why covalent compounds do not conduct electricity in their solid state.

• They have free electrons.

• They have no free ions or electrons.

• They have a rigid lattice structure.

• They have high melting points.

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VA.PS.3.c