Which of the following is not a sign that chemical reaction has taken place? a. temperature change
b. formation of a liquid
c. color change
d. formation of a gas

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state. a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car