ALEX Classroom Resource

Planning and Carrying out Investigations; Using Mathematics and Computational Thinking

Crosscutting Concepts: Scale, Proportion, and Quantity; Energy and Matter

Disciplinary Core Idea: Matter and Its Interactions

Students:

• Plan an investigation, considering the types of data, how much data, and accuracy of data needed to produce reliable measurements.
• Evaluate investigation design to determine the accuracy and precision of the data collected, as well as limitations of the investigation.
• Use evidence from investigation to explain the relationships among pressure, volume, temperature, and number of particles in a gaseous system.
• Mathematically describe the relationships of pressure, temperature, and volume of an enclosed gas, when only the amount of gas is constant.
• In terms of the ideal gas law, determine molar quantities using mathematical and computational thinking.
• Analyze, represent, and model data related to the gas laws using mathematical and computational thinking.

Students know:

• Behavior of gases is determined by the movement and interactions of the particles.
• Relationships among the variables (pressure, volume, temperature, number of particles) can be used to predict the changes to a gaseous system.
• The movement and interactions of gas particles within a system and the type of sytem determine the behavior of gases.
• Relationships among the variables (pressure, volume, temperature, number of particles) can be used to predict the changes to a gaseous system.

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.
• Analyze recorded data to explain the behavior of ideal gases in terms of pressure, volume, temperature, and number of particles.
• Identify relevant components in mathematical representations of the gas laws.
• Analyze data using tools, technologies, and/ or models (e.g., computational, mathematical) in order to make valid and reliable scientific claims.
• Use mathematical representations to determine the value of any relevant components in mathematical representations of the gas laws, given the other values.

Students understand that:

• Scientists plan and conduct investigations individually and collaboratively to produce data to serve as the basis for evidence.
• Changes in the variables that affect the motion of gas particles can be described and predicted using scientific investigations.
• The patterns of interactions between particles at the atomic/ molecular/ particulate level are reflected in the patterns of behavior at the macroscopic scale.
• Cause and effect relationships may be used to predict phenomena in natural or designed systems.
• Mathematical representations of phenomena are used to support claims and may include calculations, graphs or other pictorial depictions of quantitative information.
• Changes in the variables that affect the motion of gas particles can be described and predicted using scientific investigations.
• Cause and effect relationships may be used to predict phenomena in natural or designed systems.

ASIM Module:
Calcium Carbonate Decomposition AP
Boyle's Law
Ideal Gas Law and Molar Volume

7a. & 7b.
Emphasis is placed on the relationships between gas variables in the gas laws.
Mathematical thinking is emphasized over memorization and algorithmic problem-solving.