SC15.CHM.10

Science (2015) Grade(s): 09-12 - Chemistry

Developing and Using Models; Planning and Carrying out Investigations

Energy and Matter; Stability and Change

Students know:

As the kinetic energy of colliding particles increases, the number of collisions increases and vice versa.
Behavior of gases is determined by the movement and interactions of the particles.
Particles of a gas are in rapid, constant motion and move in straight lines.
The particles of a gas are tiny compared to the distance between them.
Intermolecular forces do not affect the behavior of gases because of the large distance between the particles.
Energy is conserved when gas particles collide (energy lost by one particle is gained by the other).
Temperature is a measure of average kinetic energy of gas particles.

Students are able to:

Plan an investigation that describes experimental procedure, including how data will be collected, number of trials, experimental setup, and equipment required.
Conduct an investigation to collect and record data that can be used to describe the relationship between the measureable properties of a substance and the motion of the particles of the substance.
Use evidence from experiment to show how changes to the system change the number of particle collisions.
Develop a model based on evidence to illustrate/ explain the relationships between systems or between components of a system.

Students understand that:

Scientists plan and conduct investigations individually and collaboratively to produce data to serve as the basis for evidence, and in the design decide on types, how much, and accuracy of data needed to produce reliable measurements.
Much of science deals with constructing explanations of how things change and how they remain stable.
Science assumes the universe is a vast single system in which basic laws are consistent.
Models are used to illustrate the relationships between systems or between components of a system.