Chemical Change Clues Quiz

What does the presence of bubbles in a chemical reaction typically indicate?

• The color is changing

• The temperature is decreasing

• A gas is being produced

• A new solid is forming

Which of the following is a sign of decomposition?

• A foul smell

• A temperature increase

• A change in color

• A pleasant fragrance

What type of reaction absorbs heat, making the surrounding area colder?

• Decomposition reaction

• Endothermic reaction

• Exothermic reaction

• Precipitation reaction

What is the term for the solid that forms in a liquid during a chemical reaction?

• Ash

• Gas

• Corrosion

• Precipitate

Which of the following sounds might indicate a chemical change is occurring?

• The sound of a leaf rustling

• The sound of a firecracker exploding

• The sound of boiling water

• The sound of a clock ticking