Elements, Compounds, Mixtures

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically combined and can be present in any ratio.

Front

What is an element?

Back

An element is a pure substance that consists of only one type of atom.

Front

What is a compound?

Back

A compound is a substance formed when two or more different types of atoms chemically bond together in a fixed ratio.

Front

Can a mixture be separated into its components?

Back

Yes, mixtures can be separated into their individual components by physical means.

Front

What is the difference between a homogeneous mixture and a heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has a non-uniform composition.

Front

Give an example of a homogeneous mixture.

Back

An example of a homogeneous mixture is saltwater.

Front

Give an example of a heterogeneous mixture.

Back

An example of a heterogeneous mixture is a salad.

Front

What is the law of definite proportions?

Back

The law of definite proportions states that a chemical compound always contains its component elements in fixed ratio by mass.

Front

What is the significance of chemical formulas?

Back

Chemical formulas represent the types and numbers of atoms in a compound, indicating its composition.

Front

What is a solution?

Back

A solution is a homogeneous mixture where one substance (the solute) is dissolved in another (the solvent).