Practice Test | Chapter 5 - The Structure of Matter

Front

What is the empirical formula of glucose and fructose?

Back

C₆H₁₂O₆

Front

What is the reason solid ionic compounds have high melting points?

Back

The ionic bonds are strong electrostatic attractions.

Front

What type of elements form negatively charged ions in ionic compounds?

Back

Nonmetallic elements.

Front

What type of bond involves the sharing of electron pairs between atoms?

Back

Covalent bond.

Front

What do formula units of sodium chloride (NaCl) contain equal numbers of?

Back

Sodium and chloride ions.

Front

Define ionic bond.

Back

A bond formed through the electrostatic attraction between oppositely charged ions.

Front

What is a covalent bond?

Back

A bond formed when two atoms share one or more pairs of electrons.

Front

What is the difference between empirical formula and molecular formula?

Back

Empirical formula shows the simplest ratio of elements, while molecular formula shows the actual number of atoms in a molecule.

Front

What are the characteristics of ionic compounds?

Back

They are typically solid at room temperature, have high melting points, and conduct electricity when dissolved in water.

Front

What is a formula unit?

Back

The lowest whole number ratio of ions in an ionic compound.