Lars observes a substances to be solid and to float in water at room temperature 23 based on the given properties, which substances is the most likely identity of this sample

An alcohol thermometer makes use of alcohol's changing in order to measure temperature. as the temperature goes up, the alcohol contained in the thermometer increases in volume, filling more of the thermometer's tube.

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

State one important difference between a physical change and a chemical change?