Elements, Compounds, Mixtures (No specific Mixtures)

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, meaning that the different components are not distinguishable. Example: Salt water.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture where the components are not uniformly distributed and can be easily distinguished. Example: Italian dressing.

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout. It can be an element or a compound.

Front

What is an element?

Back

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

Front

What is a compound?

Back

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

Front

How are elements represented in chemistry?

Back

Elements are represented by chemical symbols, which consist of one or two letters, with at least one capital letter.

Front

What is the difference between elements and compounds?

Back

Elements contain only one kind of atom, while compounds contain two or more different kinds of atoms.

Front

What is a solution?

Back

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

Front

Can compounds be separated by physical means?

Back

No, compounds cannot be separated by physical means; they can only be separated by chemical reactions.

Front

Can mixtures be separated by physical means?

Back

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