Elements, Compounds, Mixtures

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 oxygen, hydrogen, and gold.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. An example is water (H2O), which is made of hydrogen and oxygen.

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. An example is a salad.

Front

What is the difference between a compound and a mixture?

Back

A compound is made of two or more elements chemically combined, while a mixture is made of two or more substances that are physically combined.

Front

What happens when you add raspberries to a bowl of blueberries?

Back

You create a mixture, as both fruits retain their individual properties.

Front

What does the chemical formula NaHCO3 represent?

Back

NaHCO3 is the chemical formula for sodium bicarbonate, which is a compound.

Front

What is an example of a mixture?

Back

An example of a mixture is air, which contains various gases like nitrogen, oxygen, and carbon dioxide.

Front

What is the representation of a mixture in a diagram?

Back

In a diagram, a mixture is represented by different colored circles that are not 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 the main characteristic of an element?

Back

The main characteristic of an element is that it consists of only one type of atom.