Chapter 1 & 2 Flashcards
Which of the following is an example of special revelation?
The Bible
Who developed the equation relating matter and energy?
Albert Eistein
Who first described the property of inertia?
Sir Issac Newton
What represents the maximum deviation from the mean, or the precision of a measuring instrument?
Tolerance
Which of these is the only fundamental quantity whose standard unit is still a physical object?
Mass- kilogram
What particle or particles of the atom’s nucleus determine the atomic number?
Protons
Does mass or weight or both vary according to the strength of gravity?
Only weight
Mercury has a boiling point of 356.58 degrees Celsius and a melting point of negative 38.87 degrees Celsius. In what state does Mercury exist at -240 degrees Celsius?
Solid
The state in which matter exists depends on the object’s (density, energy, pressure or temperature)?
Energy
What is the difference between accuracy and precision? Short answer
Accuracy-is the measurement of how close the value is to the actual value
Precision- is the measurement of how close the values are in relation to each other
What is the difference between a molecule and a mixture?
Molecule- is a chemical combination of two or more atoms
Mixture- is a physical combination of two or more elements or compounds
Compare and contrast alpha decay and beta decay?
Alpha decay occurs when a nucleus emits a high-energy particle of two protons and two neutrons, whereas beta decay occurs when a neutron’s down quark changes into an up quark, changing the neutron into a proton and forcing the emission of an electron.
What is the mass of a 2.00 cm^3 block of iron? The density of iron is 7.87 f/cm^3.
Mass
Density = ————
Volume
What is the specific gravity of the block of iron in problem before this one?
Density of sample
Specific gravity= ——————————————
Density of standard
How many significant figures are in the following: 0.05603?
Four significant figures
Length = meter
Q
Mass = kilogram
Q
Time = second
Q
Temperature = kelvin
Q
Electric current = ampere
Q
centi = 10 ^-2
Q
kilo = 10 ^3
Q
mega = 10 ^6
Q
micro = 10 -^6
Q
nano = 10 -^9
Q
Physics is the study of ———–
Matter and energy
The statement that matter at rest will, if left alone, remain at rest describes the ——- of matter.
Inertia
The type of error known as —— cannot be eliminated.
Random error
A —— is an unalterable fact that, general agreement, sets the unit value of a fundamental unit.
Standard
An arithmetic combination of fundamental units is called a (n) ——- unit.
Derived
The ratio of an object’s mass to its volume is the definition for ———.
Density
Of the four states of matter, ——- is considered to be the most common in the universe.
Plasma
What is another name for the US customary system?
FPS System
