CHAPTER 1 Flashcards
COVER EVRYTHING (20 cards)
What is the SI unit of mass?
Kilogram (kg)
True or False: The metric system is based on powers of ten.
True
Fill in the blank: The measure of the amount of space an object occupies is called _____ .
Volume
Which of the following is a derived unit: a) meter, b) second, c) Newton, d) kilogram?
c) Newton
What does dimensional analysis help to check in calculations?
It helps to check the consistency of units.
What is the formula for density?
Density = Mass / Volume
True or False: The Kelvin scale is an absolute temperature scale.
True
What is the primary purpose of significant figures in measurements?
To indicate the precision of a measurement.
Fill in the blank: The process of converting from one unit to another is called _____ .
Unit conversion
If a measurement is 3.45 m with three significant figures, how should it be rounded to two significant figures?
3.5m
What is the formula for converting Celsius to Kelvin?
K = °C + 273.15
True or False: A liter is equivalent to 1000 cubic centimeters.
True
Which of the following is NOT a base unit in the SI system? a) meter, b) mole, c) liter, d) second?
c) liter
What is the purpose of a conversion factor in dimensional analysis?
To express a quantity in different units.
What is the relationship between mass and weight?
Weight is the force of gravity acting on mass.
Fill in the blank: The standard unit of length in the SI system is the _____ .
Meter
What is the significance of the number 273.15 in temperature conversions?
It is used to convert Celsius to Kelvin.
True or False: The volume of an irregularly shaped object can be measured using water displacement.
True
What is the unit for pressure in the SI system?
Pascal (Pa)
Which of the following describes a physical property? a) Flammability, b) Density, c) Reactivity, d) Toxicity?
b) Density
