Chemical Changes Gizmo 2022

First Name

Last Name

Period

• 2
• 3
• 4
• 7
• 9

Click Play. What do you observe?

Do you think a chemical reaction has taken place? Explain.

A. In the Gizmo, drag the Thermometer into the flask of water. What is the starting temperature? _____°C

B. Click Play, and wait for the reaction to end. What is the final temperature? _____ °C

A. Click Reset. Drag the Phenol red next to the flask of water. What does the indicator show?

• The indicator is orange, showing that the water is neutral.
• The indicator is orange, showing that the water is acidic.
• The indicator is orange, showing that the water is basic.

Click Play, and wait for the reaction to end. What does the indicator show now?

• The indicator is pink, showing that the product is a neutral.
• The indicator is pink, showing that the product is an acid.
• The indicator is pink, showing that the product is a base.

Click Play and observe the cylinder. Was any gas produced in the reaction?

• Yes
• No