Table of contents

1. The Chemical World9m
- The Scientific Method
  9m
2. Measurement and Problem Solving2h 19m
3. Matter and Energy2h 15m
4. Atoms and Elements2h 33m
5. Molecules and Compounds1h 50m
6. Chemical Composition1h 23m
7. Chemical Reactions1h 43m
8. Quantities in Chemical Reactions1h 8m
9. Electrons in Atoms and the Periodic Table2h 32m
10. Chemical Bonding2h 10m
11 Gases2h 7m
12. Liquids, Solids, and Intermolecular Forces1h 11m
13. Solutions3h 1m
14. Acids and Bases2h 14m
15. Chemical Equilibrium1h 27m
16. Oxidation and Reduction1h 33m
17. Radioactivity and Nuclear Chemistry53m

11 Gases

Kinetic Molecular Theory

Introduction to Chemistry

11 Gases

Kinetic Molecular Theory

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Multiple Choice

Which of the following statements is/are true for gas molecules according to the Kinetic Molecular Theory?

I.Increasing the amount of gas molecules increases the pressure by increasing the force of the collisions.
II.Decreasing the temperature of a gas decreases the pressure by increasing the force of the collisions.
III.Decreasing the volume of a gas increases pressure by increasing the frequency of the collisions.

I only

II only

III only

I and II

II and III

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Verified step by step guidance

Understand the Kinetic Molecular Theory: This theory explains the behavior of gas molecules, stating that gas pressure is due to collisions of molecules with the walls of the container.

Analyze statement I: Increasing the amount of gas molecules increases the pressure by increasing the frequency of collisions, not necessarily the force. More molecules mean more collisions with the container walls.

Analyze statement II: Decreasing the temperature of a gas decreases the pressure because the molecules move slower, reducing both the frequency and force of collisions.

Analyze statement III: Decreasing the volume of a gas increases pressure because the molecules have less space to move, leading to more frequent collisions with the container walls.

Evaluate the statements: Based on the Kinetic Molecular Theory, statement III is true as it correctly describes the relationship between volume and pressure. Statements I and II are incorrect in their explanations of pressure changes.