1. Intro to General Chemistry

Which of the following is a common indication that a chemical reaction has occurred?

Which of the following statements about metals is correct?

Which gas is most abundant in Earth's atmosphere?

When chemicals are exposed to intense UV rays from the sun, which of the following is most likely to occur?

Which term best describes the process by which one or more substances change to produce one or more different substances?

Which of the following best describes soap in terms of its chemical properties?

Which of the following represents a chemical property of hydrogen gas?