1. Intro to General Chemistry

Which of the following best describes what happens during condensation?

What happens when salt is placed in water?

Which of the following best describes sublimation?

Which of the following is a sign of a chemical change?

Which of the following processes causes a solid to change to a liquid?

A model shows water vapor turning into liquid water on a cold surface. Which change of state is represented?

Which process describes the change of a solid to a liquid?

Which of the following best describes the appearance of water before it undergoes a phase change from liquid to gas?

When solid NaCl is stirred into water, which type of change occurs?

When mineral oil and food coloring are mixed, is the observed change best classified as a physical change or a chemical change?

Molten (liquid) steel and solid steel are different because of which property?

Which of the following indicates that a physical change has taken place?

Which of the following best describes the change that occurs when wood is burned?

How does the molecular motion of a substance change when it transitions from the liquid phase to the solid phase?

Which of the following transitions represents a chemical change?