1. Intro to General Chemistry

Which of the following is necessary to be certain that a chemical change has occurred?

Which of the following best describes whether a chemical change can be undone?

Which of the following is a reliable indicator that a chemical change has occurred?

Which statement describes all chemical changes?

Which of the following statements about ice melting is true?

Which of the following best describes how a chemical change might be reversed?

When a nail rusts, what type of change has occurred?

Which type of change occurs when water (H_2O) freezes into ice?

Which term describes the change of state from a gas to a liquid?

Which of the following best explains why melting an ice cube is considered a reversible physical change?

Water freezing and becoming ice is an example of what type of change?

Which type of process is ice melting to become liquid water?

Which of the following is an example of a chemical change?

Which of the following laboratory activities involves a chemical change?

Which of the following best describes the main difference between physical properties and chemical properties?