1. Intro to General Chemistry

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?

Why are fossil fuels called 'fossil' fuels?

Which statement describes a property that is unique to metalloids?

Which property of metals can be inferred from their ability to conduct electricity well?

Carbon and hydrogen are ______ elements.

Which of the following molecules contains the least polar bond?

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

Water would be considered a(n) _______.