1. Intro to General Chemistry

Which of the following changes in the physical state of water require the input of energy?

Is the ability of a substance to support combustion considered a physical property or a chemical property?

Which type of change occurs when water evaporates from a surface?

During which of the following events would a chemical change occur?

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

Which observation would indicate that a chemical reaction occurred?

Which of the following is an example of condensation in the water cycle?

Which of the following is NOT a chemical change?

When baking a cake, is the process considered a chemical change or a physical change?

Which of the following observations most reliably indicates that a chemical change has occurred rather than a physical change?

Which of the following is NOT a potential sign of a chemical change?

Why can chemical changes often not be reversed?

Which of the following is NOT a possible sign of a chemical change?

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

Which of the following is NOT a sign that a chemical reaction has occurred?