Study for science test-Grade 8

particle model of matter, classification of matter,fluids

What is matter?

Anything that has mass and takes up space.

particles have ______ between them.

spaces

What is a pure substance?

They only contain one kind of particle. They can be a solid,liquid or gas.

What is an element?

They are found on the periodic table and have the same atoms.

What is a compound?

When one or more elements combine chemically.

What is a mixture?

It contains two or more pure substances.

What is a homogeneous mixture?

Appear to be one substance, but have many things in them.

What is a heterogeneous mixture?

Two or more different parts can be seen. Different kinds of particles stay together.

What is a suspension?

A heterogeneous mixture in which the particles settle slowly after mixing.

What is a colloid?

A heterogeneous mixture in which the particles do not settle.

What is an emulsion?

The particles are dispersed for a long period of time by adding an emulsifying agent.

What is a mechanical mixture?

A heterogeneous combination of two or more substances where you can see the different parts like oil and water.

What is a fluid?

A substance that flows and takes the shape of its container, can be a liquid or gas.

All ________ are made of tiny particles.

substances

All particles in a _________substance are the same.

pure

Particles are always in _______.

motion

Particles are always ________ to each other.

attracted