Question

Using the image seen here, identify any statements that could be true. (3 points) Responses Burning campfire wood is a chemical change. Burning campfire wood is a chemical change. Toasting marshmallows results in a chemical change. Toasting marshmallows results in a chemical change. Burning campfire wood is a physical change. Burning campfire wood is a physical change. Toasting marshmallows results in a physical change only. Toasting marshmallows results in a physical change only. The heat produced by the fire chemically changes the surrounding air. The heat produced by the fire chemically changes the surrounding air.

Answer 1

Based on the concepts of chemical and physical changes, we can evaluate the statements given:

1. Burning campfire wood is a chemical change. - True. When wood burns, it undergoes a chemical transformation, producing ash, smoke, and various gases.

2. Toasting marshmallows results in a chemical change. - True. When marshmallows are toasted, the sugars caramelize and undergo a chemical change due to the heat.

3. Burning campfire wood is a physical change. - False. Burning wood alters its chemical structure, which is characteristic of a chemical change.

4. Toasting marshmallows results in a physical change only. - False. The process of toasting marshmallows involves both physical (melting) and chemical changes (cooking and caramelization).

5. The heat produced by the fire chemically changes the surrounding air. - True. The heat can cause changes in the air, such as the formation of carbon dioxide and water vapor from combustion.

True Statements:

• Burning campfire wood is a chemical change.
• Toasting marshmallows results in a chemical change.
• The heat produced by the fire chemically changes the surrounding air.