1. Chemistry: Day 3
Iron Oxide Lab

2. What happens when iron is exposed to oxygen?
Big Question:
What happens when iron is exposed to oxygen?

3. Materials:
Steel Wool (iron)
Container & Lid
Vinegar
Thermometer

4. Place the thermometer in the empty container for one minute.
Step 1:
Place the thermometer in the empty container for one minute.
Record the temperature in your notebook.

5. Place a piece of steel wool in the container and pour vinegar on it.
Step 2:
Place a piece of steel wool in the container and pour vinegar on it.
Wait one minute.

6. Return the steel wool to the container.
Step 3:
Remove the steel wool from the vinegar, pour the vinegar into the sink and squeeze the steel wool into the sink.
Return the steel wool to the container.

7. Step 4:
Place the thermometer directly into the steel wool (wrap the steel wool around the thermometer) and place the lid on the container.

8. Wait 5 minutes, record the temperature that the thermometer shows.
Step 5:
Wait 5 minutes, record the temperature that the thermometer shows.

9. Observe what other changes that have occurred in the container.
Step 6:
Observe what other changes that have occurred in the container.

10. 1.) Is the reaction a physical or chemical reaction? How do you know?
Targeted Questions:
1.) Is the reaction a physical or chemical reaction? How do you know?

11. 2.) Is the reaction exothermic or endothermic? How do you know?
Targeted Questions:
2.) Is the reaction exothermic or endothermic? How do you know?

12. 3.) What is the new substance created?
Targeted Questions:
3.) What is the new substance created?

13. What two elements were present in the jar?
Targeted Question:
What two elements were present in the jar?

14. Iron + Oxygen = Iron Oxide
Iron = Fe
Oxygen = O (O2 in the air)
Iron Oxide (Fe2O3)