Part 1 - Multiple Choice (75 questions) CP

Which diagram below would represent an acidic solution?

• Diagram A
• Diagram B
• Diagram C
• None of the diagrams represent an acidic solution

Read: Kinetic molecular theory is a scientific model that helps us understand the behavior of gases. According to this theory, gases are made up of tiny particles, such as atoms or molecules, that are in constant, random motion. These particles move in a straight line until they collide with another particle or the walls of their container. The kinetic molecular theory explains why gases expand to fill their container and why they have low densities compared to liquids and solids. RESPOND: What is the main idea of the kinetic molecular theory?

• Gases are heavier than liquids and solids
• Gases are not affected by collisions
• Gases have fixed shapes and volumes
• Gases are made up of tiny particles in constant motion

READ: The behavior of gases can be explained by the principles of kinetic molecular theory. One key concept is the relationship between the temperature of a gas and its average kinetic energy. As gas particles move faster at higher temperatures, their kinetic energy increases. This relationship helps us understand why gases expand when heated and contract when cooled. Additionally, the kinetic molecular theory provides a basis for explaining the pressure exerted by gases on their container walls. RESPOND: How does temperature affect the kinetic energy of gas particles?

• Higher temperatures slow down the movement of gas particles
• Higher temperatures decrease the kinetic energy of gas particles
• Temperature has no effect on the kinetic energy of gas particles
• Higher temperatures increase the kinetic energy of gas particles

A beaker is filled with 80.00 g of water. How many moles of water are in the beaker?

• 2.33 x 10³ moles of water
• 1.44 x 10³ moles of water
• 4.44 moles of water
• 0.23 moles of water

READ: Another important aspect of kinetic molecular theory is the concept of gas pressure. When gas particles collide with the walls of their container, they exert a force that we perceive as pressure. The more frequent and energetic the collisions, the higher the pressure of the gas. This idea helps explain why gases can be compressed into smaller volumes by increasing the pressure on them. Understanding gas pressure is crucial for various applications, from weather systems to scuba diving equipment. RESPOND: How is gas pressure related to the collisions of gas particles?

• Gas pressure is only affected by the size of the container
• Gas pressure increases with more frequent and energetic collisions
• Gas pressure is independent of particle collisions
• Gas pressure decreases when particles collide less frequently

pH starts at 9, [H+] increase by 100, ending pH is

• 7
• 11

pH starts at 3, [OH-] increase by 100, ending pH is

• 1
• 5

pH starts at 12 and ends at 8,

• [H+] increased by 10000
• [H+] decreased by 10000
• [H+] increased by 4
• [H+] decreased by 4

pH = 13

• H+ > OH-
• H+ < OH-
• H+ = OH-

Identify:

• Acid
• Base