3b circle chemical change or physical change 6a. what event is occuring? 6b. circle: chemical change or…

Explanation:

Step1: Analyze the image

The image shows a solid substance being crushed into smaller pieces.

Step2: Recall change - type definitions

A physical change is a change in the form or appearance of a substance without changing its chemical composition. A chemical change results in a new substance with different chemical properties.

Step3: Determine the type of change

Since only the physical form (size and shape) of the substance is changing and no new substance is formed, it is a physical change.

Answer:

6a. A solid substance is being crushed. 6b. Physical Change