1. Describe What Is Happening and Why with Your Partner(S)

Station 1. Popsicle Station –

1. Describe what is happening and why with your partner(s).

2. Decide if it is a chemical, physical change, or both.

3. Record your answers and explanations on your lab sheet.

Station 2. Lemonade Station –

1. Make powdered lemonade and fresh squeezed lemonade

2. Describe what is happening and why with your partner(s).

3. Decide if it is a chemical, physical change, or both.

Station 3. Apple Slice Station –

1. Take a pre-sliced apple from the container.

2. Make and discuss any observations with your lab partner(s).

3. Is the changing appearance of the apple slice a chemical, physical change, or both?

Station 4. Candle Station – 1. Observe the burning candle.

2. Is the burning candle an example of a chemical, physical change or both?

3. Record your observations on your data sheet.

(**if using a lit candle, students should wear goggles at this station and a lab apron, keep the candle away from the student lab sheets.)

Station 5. Alka Seltzer Station – 1. Measure out enough water to fill the film canister ¾ of the way, place a half of seltzer tablet in the canister, quickly place the top on it and walk away, and then make observations. 2. You can try this station again…use the second half of the tablet to do it again. 3. Make and discuss observations with your lab partner(s), and record your answers and explanations on your lab sheet.

Station 6. Baking Soda & Vinegar Station – **Wear goggles and apron for this lab station! 1. Place 1/3 cup of baking soda in a plastic baggie (quart size) and then fill their canister ¾ of the way with vinegar. 2. Without spilling the vinegar, place the canister inside the plastic bag, holding the canister upright, and seal the plastic bag tightly. 3. Once the bags are sealed, tip over the vinegar. 4. Make and discuss any observations with your lab partner(s), and record your answers & thoughts on the lab sheet. **(The baggie may over inflate, if so, open the bag carefully to allow some of the gases produced to escape. **Never place the baggies directly under your nose to smell for a chemical change…you may waft it towards them with their hand.

Station 7. Calcium Chloride, Baking Soda, and Phenol Red Solution Station – **Wear goggles and apron for this lab station! 1. Place 1/3 cup of calcium chloride in a plastic baggie (quart size), and an equal amount of baking soda and then fill your canister ¾ of the way with phenol red. 2. Without spilling the phenol red solution, place the canister inside the plastic bag, holding the canister upright, and seal the plastic bag tightly. 3. Make and discuss any observations with your lab partner and record your answers on your lab sheet. **(The baggie may over inflate, if so, open the bag carefully to allow some of the gases produced to escape. Warn the students to **Never place the baggies directly under your nose to smell for a chemical change…you may waft it towards them with their hand.