Mixtures and Compounds in Chemistry

Front

What is a mixture?

Back

A combination of two or more substances that retain their individual properties and can be separated by physical means.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together, resulting in a new substance with different properties.

Front

What is the difference between homogeneous and heterogeneous mixtures?

Back

Homogeneous mixtures have a uniform composition throughout (e.g., saltwater), while heterogeneous mixtures have distinct, separate components (e.g., salad).

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means, consisting of only one type of atom.

Front

What is chromatography?

Back

A technique used to separate components of a mixture based on their different affinities for a stationary phase and a mobile phase.

Front

What is an example of a homogeneous mixture?

Back

Saltwater, where the salt is completely dissolved in water.

Front

What is an example of a heterogeneous mixture?

Back

A salad, where the individual ingredients can be seen and separated.

Front

What is the chemical formula for hydrochloric acid?

Back

HCl, which is a compound made of hydrogen and chlorine.

Front

What is the significance of the periodic table in chemistry?

Back

It organizes all known elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What is a solution?

Back

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