Elements and Compounds

Front

What are compounds?

Back

Compounds are substances formed when two or more different elements chemically combine. Examples include water (H2O) and carbon dioxide (CO2).

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include hydrogen (H) and oxygen (O).

Front

What is the smallest particle of matter?

Back

The smallest particle of matter is an atom. Atoms make up both elements and compounds.

Front

Do compounds contain more than one type of atom?

Back

Yes, compounds contain two or more different types of atoms chemically bonded together.

Front

Can elements exist as single atoms?

Back

Yes, some elements can exist as single atoms, such as noble gases like helium (He).

Front

What is a chemical bond?

Back

A chemical bond is the force that holds atoms together in a compound. There are different types of bonds, including ionic and covalent bonds.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically combined.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together. Molecules can be made of the same or different elements.

Front

What is the chemical formula for water?

Back

The chemical formula for water is H2O, which indicates it is made of two hydrogen atoms and one oxygen atom.

Front

What is the significance of the periodic table?

Back

The periodic table organizes all known elements based on their properties and atomic structure, helping to understand their relationships.