PS- Elements, compounds and mixture review

Front

What is a mixture?

Back

A mixture is two or more substances that have been physically combined.

Front

Can the substances in a mixture be present in any amount?

Back

Yes, the substances in a mixture can be present in any amount.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically combined in a fixed ratio.

Front

Do all samples of a compound have the same properties?

Back

Yes, each sample of a compound has the same properties as every other sample.

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

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, such as saltwater.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture that does not have a uniform composition, such as a salad.

Front

Can mixtures be separated by physical means?

Back

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

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.