Question

Aulani has an upset stomach. She places a chalky tablet of medicine in a glass of water. Then, she notices that the tablet is producing bubbles in the water.

What type of change is happening, and what evidence shows this?

Responses

chemical, there is a formation of a solid
chemical, there is a formation of a solid

chemical, there is a generation of a new gas
chemical, there is a generation of a new gas

physical, the water becomes solid
physical, the water becomes solid

physical, a precipitate is formed
physical, a precipitate is formed

Answer 1

The correct response is:

**chemical, there is a generation of a new gas.**

The evidence for this is the formation of bubbles in the water, which indicates that a gas is being produced as a result of the chemical reaction between the tablet and the water.