Front

What is a chemical compound?

Back

A chemical compound is a substance formed when two or more different elements are chemically bonded together.

Front

How do you determine the number of atoms in a chemical formula?

Back

Count the subscripts in the formula. If there are parentheses, multiply the subscripts inside by the subscript outside the parentheses.

Front

What is the correct name for the compound H2O?

Back

Water.

Front

What is the difference between ionic and covalent compounds?

Back

Ionic compounds are formed by the transfer of electrons between metals and nonmetals, while covalent compounds are formed by the sharing of electrons between nonmetals.

Front

What is the formula for sodium chloride?

Back

NaCl.

Front

How do you name a covalent compound like CO2?

Back

Use prefixes to indicate the number of atoms and the suffix '-ide' for the second element. CO2 is named carbon dioxide.

Front

What is the simplest formula for a compound?

Back

The simplest formula, or empirical formula, shows the lowest whole-number ratio of elements in a compound.

Front

What is the charge of a sulfate ion?

Back

The sulfate ion (SO4) has a charge of -2.

Front

How do you write the formula for an ionic compound?

Back

Combine the symbols of the ions, ensuring that the total positive and negative charges balance to zero.

Front

What is the name of the compound NH4Cl?

Back

Ammonium chloride.