David heats a beaker of water for 5 min. Then he removes the beaker from the heat and allows it to cool. As the beaker cools, David measures the temperature of the water every minute for 15 min. Which equipment indicates the temperature?

Thermometer

Explanation:

The equipment that indicates the temperature of the reaction is a thermometer.

A thermometer is a device used to measure the temperature of a body.

Temperature is the degree of hotness or coldness of a body.

water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e