Exam 1: Keys to the Study of Chemistry: Definitions, Units, and Problem Solving

In an average year, the American chemical industry produces more than 9.5 million metric tons of sodium carbonate. Over half of this is used in the manufacture of glass while another third is used in the production of detergents and other chemicals. How many pounds of sodium carbonate are produced annually?

Given that 1 inch = 2.54 cm, 1 cm³ is equal to

An important aim in much chemical work is to use macroscopic measurements in order to gain an understanding of the microscopic world.

Which of the following activities is not a part of good science?

Which of the following processes and concepts is not a part of the "scientific method"?

Which of the following abbreviations of the given SI base unit is incorrect?

Express 96,342 m using 2 significant figures.

The appropriate number of significant figures in the result of 15.234 × 15.208 is

A dose of medication was prescribed to be 35 microliters. Which of the following expresses that volume in centiliters?

A student makes several measurements of the density of an unknown mineral sample. She then reports the average value of these measurements. The number of significant figures she uses in her result should be a measure of its

Which of the following is a chemical change?

Acetone, which is used as a solvent and as a reactant in the manufacture of Plexiglas^®, boils at 56.1°C. What is the boiling point in degrees Fahrenheit?

The average distance from Earth to the Sun is 150 megameters. What is that distance in meters?

Which of the following is a physical change?

Which of the following represents the largest volume?

The distance between carbon atoms in ethylene is 134 picometers. Which of the following expresses that distance in meters?

Which one of the following is a "substance" in the sense of the word as used in your textbook?

As chief chemist at Superior Analytical Products (SAP) you must design an experiment to determine the density of an unknown liquid to three (3) significant figures. The density is of the order of 1 g/cm³. You have approximately 7 mL of the liquid and only graduated cylinders and balances are available for your use. Which of the following combinations of equipment will allow you to meet but not exceed your goal?

Select the answer that expresses the result of this calculation with the correct number of significant figures and with correct units. 16.18 cm × 9.6114 g ÷ 1.4783 cm² =

Which of the following is an extensive property of oxygen?