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The weight of an object is determined by the force that gravitation exerts upon the object. The weight is equal to the mass of the object times the local acceleration of gravity. Thus, on the Earth, weight is determined by the force of attraction between the object and the Earth.
Learning Objectives. Explain the process of measurement and describe the three basic parts of a quantity. Describe the properties and units of length, mass, volume, density, temperature, and time. Recognize the common unit prefixes and use them to describe the magnitude of a measurement. Describe and calculate the density of a substance.
in Physical Chemistry Third Edition Preparedforpublicationby ... course.2 We urge the users of this book always to define explicitly the terms, the units, and the symbolsthattheyuse. ... of uncertainty in physical measurements. Chapter 9 lists abbreviations and acronyms. Chap-
Measurements provide quantitative information that is critical in studying and practicing chemistry. Each measurement has an amount, a unit for comparison, and an uncertainty. Measurements can be represented in either decimal or scientific notation.
ma5$. Mass is a measure o-P the amount o-P material you have. We usually judge the mass o-P an object by its weight or how heavy it -Peels. Weight and mass are not the same thing, but •Por right now, let's just say that we measure the mass o-P an object on Earth by measuring its weight (you'll have to take
4. What is weight. a. It is the amount of gravitational pull on an object. i. A rock weighing 16 pounds on earth would way 2.7 pounds on the moon. (1/6). ii. The rock has the same mass on both the earth and the moon. b. We will often use the term weight when we mean mass c. Scales are used to measure weight, whereas balances are used to measure ...
Measurements provide quantitative information that is critical in studying and practicing chemistry. Each measurement has an amount, a unit for comparison, and an uncertainty. Measurements can be represented in either decimal or scientific notation.
