Mixtures and Substances/ Describing Substances

Front

What is matter made of?

Back

Matter is made of atoms.

Front

What does Avogadro's Hypothesis state?

Back

At the same temperature and pressure, equal volumes of different gases contain the same number of molecules.

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.

Front

What type of mixture falls between suspensions and solutions?

Back

Colloids are mixtures that fall between suspensions and solutions.

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties such as appearance, melting point, and reactivity.

Front

Define 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 bonded together.

Front

What is a solution?

Back

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

Front

What distinguishes a suspension from a solution?

Back

In a suspension, the particles are larger and can settle out over time, while in a solution, the solute is completely dissolved.

Front

What is the difference between homogeneous and heterogeneous mixtures?

Back

Homogeneous mixtures have a uniform composition throughout, while heterogeneous mixtures have distinct, separate components.