Question

- Which of the following is an example of physical change?
a. Mixing baking soda and vinegar together, and this causes bubbles and
foam.
b. A glass cup falls from the counter and shatters on the ground.
c. Lighting a piece of paper on fire and the paper burns up and leaves ashes.
d. Baking a birthday cake for your mother.​

Answer 1

B as the glass just changes form as it shattered but the chemical composition is same as it was before