Elements and Compounds

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, oxygen, and gold.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. Examples include water (H2O) and carbon dioxide (CO2).

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. Each substance retains its own properties. Examples include sand and water.

Front

Is helium gas an element, compound, or mixture?

Back

Helium gas is an element.

Front

Is rubbing alcohol (CH2OH) an element, compound, or mixture?

Back

Rubbing alcohol is a compound.

Front

Is sand in water an element, compound, or mixture?

Back

Sand in water is a mixture.

Front

What is the difference between an element and a compound?

Back

An element is a single type of atom, while a compound consists of two or more different types of atoms chemically bonded together.

Front

Can a mixture be separated into its components?

Back

Yes, mixtures can be separated into their individual components by physical means, such as filtration or evaporation.

Front

What is an example of a compound?

Back

An example of a compound is sodium chloride (NaCl), commonly known as table salt.

Front

What is an example of a mixture?

Back

An example of a mixture is salad, which contains various ingredients mixed together but not chemically combined.