Elements, Compounds, and Molecules

Front

What are compounds?

Back

Compounds are substances formed when two or more different types of atoms bond together chemically. Examples include water (H2O) and table salt (NaCl).

Front

How many types of atoms are in the compound C12H22O11?

Back

There are 3 types of atoms in C12H22O11: carbon (C), hydrogen (H), and oxygen (O).

Front

Is H₂O a molecule?

Back

TRUE. H₂O, or water, is a molecule made up of two hydrogen atoms and one oxygen atom.

Front

What is the difference between an element and a molecule?

Back

An element is a pure substance made of only one type of atom, while a molecule is made of two or more atoms bonded together, which can be of the same or different elements.

Front

What is an example of an element?

Back

An example of an element is oxygen (O), which consists of only oxygen atoms.

Front

What is a molecule?

Back

A molecule is the smallest unit of a chemical compound that retains its chemical properties, consisting of two or more atoms bonded together.

Front

What is the chemical formula for table salt?

Back

The chemical formula for table salt is NaCl, which consists of sodium (Na) and chlorine (Cl) atoms.

Front

What is the term for a substance made of only one type of atom?

Back

The term is 'element'.

Front

Can a molecule be made of the same type of atoms?

Back

Yes, a molecule can be made of the same type of atoms, such as O2 (oxygen gas), which consists of two oxygen atoms.

Front

What is the chemical formula for water?

Back

The chemical formula for water is H2O.