2025 Physical & Chemical Changes Test/Lab

Sort each property into the correct category. You do not have to drag them, you can just click the property and then click the category.

You normally use your 5 senses to detect...

Physical changes... (select the one that is true)

Any characteristic we can observe or measure without changing the chemical composition of the substance

Changes to a substance's appearance/form but not its chemical composition

A characteristic of a substance that can only be seen by changing the chemical composition of a substance

These changes impact a substance's chemical composition, causing a new substance to be created

Which of the following is NOT an example of a physical change?

Which of the following is NOT an example of a chemical change?

One example of physical change is

One example of chemical change is

Every chemical change ...

Which investigation would provide evidence of a chemical change?

Which of the indicators of change is categorized incorrectly?

The reason for Ooblek's strange behavior is

Identify whether each experiment was an example of a physical or chemical change by dragging it to the correct category.

Make sure each category is in numerical order so your answers are scored correctly.

Select both of the experiments that involved the chemical property of pH, whether we used chemicals that helped indicate it or changed the pH level during the experiment.

Select all of the experiments that involved an exothermic reaction taking place.

Select all of the experiments that had an unexpected color change occur.

Select all of the experiments that had a state of matter change occur (within the original substance.)

Select all of the experiments that experienced a PHYSICAL change in temperature.

The bubbles that formed in the water during experiment #2 were an example of effervesce

Experiment #5 showed both a new substance and a state of matter change.

Which Physical Change was NOT present in experiment #4?

Select all that apply

Which of the ABCD's of Chemical Change were not present in Experiment #4?

Select all that apply

What was the name of the new substance (the white bio-plastic) created in Experiment #6?

Please only type the one-word answer, do not answer in sentence form.

EXTRA CREDIT: When bubbles form in a liquid, how do we know when it is a chemical change (effervesce) and not just a state of matter change?

Extra points if you can correctly use one of our experiments to support/explain your answer.

EXTRA CREDIT: Rearrange the substances below in order from the least dense (top) to the most dense (bottom) based on their behavior when the dry ice was placed underwater.

1. Air in the room
2. Dry Ice Vapors
3. Water in the bowl.