Question

physical changes clue words chemical changes clue words

• cutting
• mixing
• dissolving
• change of state
• boiling
• evaporating
• freezing
• melting
• burning
• fizzing
• odor
• rusting
• corroding
• color change
• temperature change
• precipitate
• energy produced

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

Explanation:

For boiling water, we observe change of state and boiling from the clue - chart. It is a physical change as only the state of water changes from liquid to gas without forming a new substance. For rotting banana, we can observe odor, color change, which are chemical - change clue words. It is a chemical change as new substances are formed during the rotting process. For mixing baking soda and vinegar, we observe fizzing, which is a chemical - change clue word. It is a chemical change as a chemical reaction occurs producing carbon dioxide gas and new substances.

Answer:

Boiling water: Change of state, boiling; Physical change
Rotting banana: Odor, color change; Chemical change
Mixing baking soda and vinegar: Fizzing; Chemical change