_____ is the amount of matter in an object.

_____ are things you can observe or measure about an object by using your senses.

_____ is how an object feels to the touch.

_____ describes how firm something is.

A _____ is a piece of matter that is so small we cannot see it with our eyes.

A _____ is matter that has a definite shape and takes up a definite amount of space.

A _____ is matter that takes the shape of its container and takes up a definite amount of space, takes up a fixed amount of space but does not have a fixed shape.

A _____ is something that fills its container, the particles are very far apart and move freely.

To _____ means to change state from a solid to a liquid.

To _____ means to change state from a liquid to a solid.

To _____ means to change state from a liquid to a gas rapidly.

To _____ means to change state from gas to liquid.

To _____ means to change state slowly from liquid to gas.

A _____ is matter made up of two or more substances physically combined.

A _____ is a special kind of mixture in which one part is evenly mixed with the other part.

A _____ is a change in the size, shape, or state of matter, but the changes do not result in a new form of matter.

A _____ is when new materials with new properties are formed, cannot be reversed.