1.1. What is Chemistry? http://www.ck12.org
d. the structure of a plant cell- The same event is described in two ways below. Which description focuses on the macroscopic level and
which focuses on the microscopic level?
a. Chemical bonds between oxygen atoms and hydrogen atoms are broken.
b. When an electric current passes through water, a gas is produced. - State whether each of the chemists below is practicing pure chemistry or applied chemistry. Explain.
a. He is attempting to formulate a new adhesive that works well in extremely cold temperatures.
b. She is studying reactions of the element sodium with different gases. - Which of the five main chemistry disciplines is most closely related to each of the actions described below?
a. Studying the digestion of certain types of foods
b. Investigating the iron content of different samples of ore
c. Measuring how much energy is released in a series of reactions
d. Attempting to produce a new carbon-based chemical
e. Measuring the amount of mercury contamination in a sample of river water - What is the difference between renewable and nonrenewable energy?
- Identify the following energy sources as renewable or nonrenewable.
a. fossil fuels
b. solar energy
c. nuclear power
d. wind
e. geothermal energy - Name a process that is involved in biotechnology.
- What are greenhouse gases, and why is their production considered to be an environmental problem?
- What are two alternatives to the traditional use of chemically-based pesticides in agriculture?
Further Reading / Supplemental Links
- Branches of Chemistry: Overview of the Branches of Chemistry, (http://chemistry.about.com/od/branchesofchemistry/a/branchesofchemistry.htm
Points to Consider
Chemists, like all scientists, rely on a rigorous and systematic approach to studying the world called the scientific
method.
- What are the steps of the scientific method?
- How do chemists and other scientists communicate their findings to the public?