Chemical Formulas & Elements vs Compounds

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound or molecule.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is a substance formed when two or more elements are chemically bonded together.

Front

What does H2SO4 represent?

Back

H2SO4 is the chemical formula for sulfuric acid, which is a compound.

Front

How many atoms of hydrogen are in H2O?

Back

There are 2 atoms of hydrogen in H2O.

Front

How many atoms of oxygen are in H2O?

Back

There is 1 atom of oxygen in H2O.

Front

What is the chemical formula for water?

Back

The chemical formula for water is H2O.

Front

What is the chemical formula for carbon dioxide?

Back

The chemical formula for carbon dioxide is CO2.

Front

How many atoms of each element are in CO(NH2)2?

Back

C = 1, O = 1, N = 2, H = 4.

Front

Which of the following is an element: HCl, Cl, NaCl, CO2?

Back

Cl is an element.

Front

What is the chemical formula for hydrogen peroxide?

Back

The chemical formula for hydrogen peroxide is H2O2.