Question

experiment what did you observe in the experiment? (use words from the clue chart.) was this a physical or chemical change? boiling water rotting banana mixing baking soda and vinegar questions look back at the list of ways you could change paper. which of those were physical changes?

Explanation:

Step1: Analyze boiling water

Boiling water involves water changing from liquid to gas (steam). There is no new - substance formation. We observe bubbles forming and water vapor rising. It is a physical change.

Step2: Analyze rotting banana

A rotting banana is a chemical change. Microorganisms break down the organic matter in the banana, producing new substances like gases (e.g., ethylene) and changing the color and texture. We observe discoloration, softening, and a bad smell.

Step3: Analyze mixing baking soda and vinegar

When baking soda (sodium bicarbonate) and vinegar (acetic acid) are mixed, a chemical reaction occurs. Carbon dioxide gas is produced, along with water and a salt (sodium acetate). We observe fizzing and bubbling. It is a chemical change.

Answer:

Experiment	What Did You Observe in the Experiment? (Use words from the clue chart.)	Was This a Physical or Chemical Change?
Rotting banana	Discoloration, softening, bad - smell	Chemical change
Mixing baking soda and vinegar	Fizzing, bubbling	Chemical change