Compounds, Mixtures, Elements

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded together. Examples include salad, air, and saltwater.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. It is made up of only one kind of atom.

Front

Is water an element?

Back

No, water is not an element; it is a compound made of hydrogen and oxygen.

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 the chemical formula for sugar?

Back

The chemical formula for sugar is C12H22O11, indicating it is a compound.

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed from two or more elements that are chemically bonded, while a mixture is a combination of substances that are not chemically bonded.

Front

Can a mixture be separated by physical means?

Back

Yes, mixtures can be separated by physical means such as filtration, distillation, or evaporation.

Front

What is an example of an element?

Back

An example of an element is oxygen (O), which is a pure substance made of only oxygen atoms.

Front

What is the chemical symbol for gold?

Back

The chemical symbol for gold is Au.

Front

Is salt (NaCl) a compound or a mixture?

Back

Salt (NaCl) is a compound formed from sodium and chlorine.