Question

imagine that youve been instructed to complete the following steps to construct a volcano science experiment.
as you read each step, determine whether the changes that occur in each step are physical or chemical changes. complete the table.
step 1: build the volcano by shaping clay and mud with your hands.
step 2: place a container inside of the volcano that can hold reactants, such as baking soda.
step 3: pour the baking soda into the container inside the volcano. no chemical reaction occurs.
step 4: add a source of vinegar to the container and watch your volcano erupt!

Explanation:

Step1: Analyze Step 1

Shaping clay and mud is just changing the shape, no new substances formed. So it's a physical change.

Step2: Analyze Step 2

Placing a container inside the volcano is just a positional change, no chemical reaction. So it's a physical change.

Step3: Analyze Step 3

Pouring baking soda and causing a chemical reaction means new substances are formed. So it's a chemical change.

Step4: Analyze Step 4

Adding vinegar and watching the reaction means new substances are formed due to chemical interaction. So it's a chemical change.

Answer:

Step	Physical Change	Chemical Change
Step 2	√
Step 3		√
Step 4		√