Question

match each image with the evidence of a chemical change it illustrates.
color change
gas produced
light produced
temperature change
sound produced
odor produced

Explanation:

• A person smelling indicates detection of a new scent, a sign of odor from a chemical change.
• Light sticks emit light via a chemical reaction, showing light production.
• Fireworks explosions create sound as part of their chemical reaction.
• Visible color shifts in liquids are direct evidence of a color change from a chemical reaction.
• A pill dissolving to create a cloudy, bubbly liquid shows gas being released (a chemical change indicator).
• A hand feeling a container tests for heat/cold changes from a chemical reaction.
• Hand warmers work via an exothermic chemical reaction, causing a temperature increase.

Answer:

1. Image of person smelling → Odor Produced
2. Image of glowing light sticks → Light Produced
3. Image of exploding fireworks → Sound Produced
4. Image of changing liquid colors → Color Change
5. Image of dissolving pill making cloudy liquid → Gas Produced
6. Image of hand feeling container → Temperature Change
7. Image of hand warmer packet → Temperature Change