1. Intro to General Chemistry

Which of the following statements best describes the chemical properties of a water molecule?

In a chemical formula such as H2O, what do the small numbers (subscripts) in the formula represent?

Which of the following is not a correct association between a chemical property and its description?

When chlorofluorocarbon (CFC) and hydrochlorofluorocarbon (HCFC) refrigerants decompose in the atmosphere, which gas is primarily released that contributes to ozone depletion?

Which of the following materials is most susceptible to chemical weathering by dissolution?

Is a change in color always indicative of a chemical reaction? Why or why not?

Which type of water may be considered pure?

Which of the following best represents the approximate percentage of oxygen by volume in Earth's atmosphere?

Which of the following is a characteristic of natural sodium chloride (NaCl) deposits?

In an experiment investigating chemical properties, what is the purpose of adding sodium carbonate (Na2CO3) in part 1a?

Which of the following is a common use of the mineral gypsum?

In a chemical reaction, two reactants mix. The resulting substance is called a(n):

In the term 'trace element,' the adjective 'trace' means that:

Which of the following is characteristic of a metal?

Which of the following properties does NOT contribute to the nonflaming combustion of a material?