In lesson 5.8, students explore how temperature affects the solubility of carbon dioxide in water. The lesson covers the design of scientific experiments, molecular interactions, and the impact of temperature on gas solubility. Students conduct an experiment comparing CO2 release in heated and cooled carbonated water, analyze results, and relate findings to molecular structures. The lesson aligns with NGSS standards, emphasizing model development and understanding molecular composition.

What happens to the solubility of a gas in water as the temperature increases?

• It decreases.

• It increases.

• It remains the same.

• It fluctuates randomly.

Why does carbon dioxide escape from a seltzer water bottle when opened?

• The pressure inside the bottle increases.

• The pressure inside the bottle is released.

• The temperature of the water decreases.

• The water absorbs more carbon dioxide.

What is the main reason carbon dioxide can dissolve in water?

• Water molecules are attracted to the polar parts of carbon dioxide.

• Carbon dioxide is non-polar.

• Carbon dioxide forms ionic bonds with water.

• Water molecules are non-polar.

In the student experiment, what was observed when carbonated water was heated?

• More carbon dioxide was released.

• The water became more carbonated.

• The water temperature decreased.

• Less carbon dioxide was released.

What does the graph on the student activity sheet show about carbon dioxide solubility?

• Solubility increases with temperature.

• Solubility decreases with temperature.

• Solubility remains constant with temperature.

• Solubility is not affected by temperature.

How does the graph align with the students' observations?

• It contradicts their observations.

• It confirms that more carbon dioxide is released at higher temperatures.

• It suggests that temperature has no effect on solubility.

• It shows that solubility increases with temperature.

What NGSS performance expectation is related to lesson 5.8?

• MS-PS4-1

• MS-PS1-1

• MS-PS2-1

• MS-PS3-1

What is the significance of understanding molecular structures in this lesson?

• To determine the weight of molecules.

• To calculate the speed of molecules.

• To understand the solubility of gases in liquids.

• To predict the color of substances.

What is the role of developing models in science education according to the lesson?

• To create artistic representations.

• To describe phenomena and understand molecular interactions.

• To simplify complex equations.

• To memorize scientific facts.

What cross-cutting concept is emphasized in the lesson?

• Stability and change

• Structure and function

• Energy and matter

• Scale, proportion, and quantity