Answers and Explanations
Here are the answer explanations for all 1,001 chemistry questions in this book. For reference, you can find the periodic table in the Appendix.
1. a gram
A gram (g) is a common metric unit of mass used in the laboratory.
2. a centimeter
A centimeter (cm) is a common metric unit of length used to measure small objects in the laboratory. You can also measure small objects in millimeters (mm).
3. a milliliter
A milliliter (mL) is a common metric unit of volume used in the laboratory. You can also measure volume in cubic centimeters (cm3 or cc), but that unit is less common in the lab.
4. a millimeter of mercury
A millimeter of mercury (mm Hg), also known as a torr, is a common metric unit of pressure used in the laboratory when dealing with gases. Other units of pressure are pascals, atmospheres, and bars; however, they aren’t as common in the chemistry lab.
5. a joule
The joule (J) is a basic unit of energy or work in the metric system. It’s equal to a newton-meter (N·m).
Kilo- is the metric prefix that represents 1,000, or 103.
Milli- is the metric prefix that represents , or 10–3.
Centi- is the metric prefix that represents , or 10–2.
Nano- is the metric prefix that represents ...