You might have learned that all plants and animals are made of cells. That is true, but cells are made of ____________, too.

The ___________ coffee that people drink is made of particles.

The indicator paper showed that the same type of particles that made up the acetic acid were also in the ________.

Indicator paper changes to a specific ___________ when certain types of particles touch it.

Which form of matter has a definite shape and takes up space (has definite volume)?

What are the states of matter?

What state of matter is apple juice at room temperature?

What state of matter is helium (as in a helium balloon) at room temperature?

Gases can be added to or subtracted from a rigid container yet continue to take the shape of the container.

Air is matter because it has mass and volume. Air is a gas. Since a __________ takes the shape of its container, air must take the shape of its container.

Taking some air out of the flask means there is less air inside. Less ____________ means less mass.

All matter is made of tiny, invisible particles. The particles have empty space between them. All particles are constantly in ______________.

The class consensus model should include (1) an open source, (2) a _________, (3) air particles, (4) odor particles, (5) empty space between particles, and (6) an

indication that particles are moving.

All matter is made of particles. In the gaseous state, particles are moving in straight lines in all directions until they collide with another particle or ____________ off the side of the container.

Carbon monoxide detectors tell if burning gas is emitting carbon monoxide (a dangerous gas).

• Dogs (or dog noses) sniff for drugs and bombs.

Radar detectors can tell the speed of cars.

As you breathe in through your nose, you force particles in the air to move through your nostrils. They go past the _________ cavity.

Some amount of carbon monoxide in the air is safe. The safe level is 39 parts per million.

Which is this?

The indicator paper changing color in the air is evidence that the particles in the gas state moved in the air around the paper.

The same particles that are in the beverage are also in the air. You smell your favorite beverage because some of the particles move to your nose.

the amount of matter an object has is called

Mass is measured in ...

Evidence is ___________________

Freezing

Boiling