Compare homogeneous and heterogeneous mixtures?

A homogeneous mixture has the same uniform appearance and composition throughout. Many homogeneous mixtures are commonly referred to as solutions. A heterogeneous mixture consists of visibly different substances.

Explanation:

The concepts developed in this standard include the following:

· The position of an object can be described by locating it relative to another object or the background.

· Tracing and measuring its position over time can describe an object’s motion.

· Speed describes how fast an object is moving.

· A force is any push or pull that causes an object to move, stop, or change speed or direction.

· The greater the force, the greater the change in motion will be. The more massive an object, the less effect a given force will have on the object.

· Energy may exist in two states: kinetic or potential.

· Kinetic energy is the energy of motion.

· Friction is the resistance to motion created by two objects moving against each other. Friction creates heat.

· Unless acted on by a force, objects in motion tend to stay in motion and objects at rest remain at rest. In order to meet this standard, it is expected that students should be able to:

· identify the forces that cause an object’s motion.

· describe the direction of an object’s motion: up, down, forward, backward.

· infer that objects have kinetic energy.

· design an investigation to determine the effect of friction on moving objects.