Chem Solutions Flash Cards

What is a colloid?

A mixture that does not separate on standing and has particle sizes ranging from 1 to 1000 nm.

What defines a suspension?

A mixture where large particles over 1000 nm settle out and can be filtered.

What distinguishes a homogeneous mixture?

A mixture that has a uniform composition and properties throughout.

What is a characteristic of a heterogeneous mixture?

A mixture that does not have a uniform composition and can often be separated into its components.

What is the particle size range for a colloid?

1 to 1000 nm.

What is the particle size for solutions?

0.01-1 nm, consisting of atoms, ions, or molecules.

How does the Tyndall Effect relate to colloids?

Colloids scatter some wavelengths of light, causing them to display the Tyndall Effect.

What happens to particles in a suspension over time?

Particles settle out and can be filtered.

Does a colloid scatter light?

No, it does not scatter light.

Can a homogeneous mixture be filtered?

No, it cannot be filtered.