Chemical Formulas

Front

What is a subscript in a chemical formula?

Back

A subscript is a small number written to the right of an element symbol that indicates the number of atoms of that element in a molecule.

Front

What does a coefficient in a chemical formula represent?

Back

A coefficient is a number placed in front of a chemical formula that indicates how many molecules of that compound are present.

Front

How many different elements are in the compound C6H12O6?

Back

There are 3 different elements: Carbon (C), Hydrogen (H), and Oxygen (O).

Front

What is the correct chemical formula for 3 Hydrogen (H), 1 Sulfur (S), and 4 Oxygen (O)?

Back

The correct formula is H3SO4.

Front

What do the red numbers in a chemical formula typically represent?

Back

The red numbers usually represent coefficients, indicating the number of molecules.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which also determines the element's identity.

Front

What is the difference between a subscript and a coefficient?

Back

A subscript indicates the number of atoms of an element in a molecule, while a coefficient indicates the number of molecules of a compound.

Front

What does the formula H2O represent?

Back

H2O represents water, consisting of 2 Hydrogen atoms and 1 Oxygen atom.

Front

How do you determine the number of atoms in a compound from its formula?

Back

You add the subscripts for each element in the formula to find the total number of atoms.

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing the composition of a compound using element symbols and numbers.