1. Intro to General Chemistry

Which of the following is a chemical property of a substance?

Which of the following best describes a chemical reaction?

At a pressure of 18.1 inches Hg vacuum, what is the saturation temperature of R-123?

The 'elephant toothpaste' demonstration involves the rapid decomposition of hydrogen peroxide, producing foam. Is this process an example of a physical change or a chemical reaction?

What is the primary reason that NH_3(aq) is added to the dissolved penny solution in this experiment?

Which of the following must occur when a substance undergoes a chemical change?

Increased ozone in the lower atmosphere (near the ground) results primarily from:

Which of the following is the best way to determine if a chemical change has taken place?

Why does aluminum (Al) metal not undergo corrosion like iron does?

Which of the following best describes the primary function of Ca^{2+} in biological systems?

When calcium carbonate (CaCO3) decomposes upon heating, what is the solid product formed along with carbon dioxide (CO2)?

Chlorofluorocarbons may be harming the ozone layer by ____.

Which branch of chemistry primarily studies how pollution affects marine life?

Binary compounds are composed of how many different types of atoms?

To what extent do covalent compounds conduct electricity?