Chemistry Test Chapter 5 Flashcards
What does 1 millimeter of mercury equal?
1 torr
What is number of protons in an atom?
Atomic number
What does the standard atmosphere (atm) equal?
760 torr
760 mmHg
What isotope is the atomic mass unit defined relative to?
Carbon -12 atom
Which step of the scientific method involves thinking about nature to develop an idea about how something works?
Hypothesizing
What is a microsecond?
One millionth of a second 0.0000001
What is the standard temperature and pressure ( stp)
1atm
273k
How many atoms are in exactly one mole of atoms?
6.02•10^23
Avogadro’s number
What equals 0 K?
Absolute zero
= -273 degrees C
How do you measure atmospheric pressure?
Barometer
Aneroid barometer
What is a barameter used for?
Measure atmospheric pressure
Define pressure
A push per unit
Pressure=force/area
What happens in a solid state of matter?
Molecules held rigidly and compact
Define precision
Consistency of measurement over and over again
What is or define Avogadro’s number?
6.02•10^23 particles/molecules
What is the formula of copper chloride?
CuCl
Formula for combination reaction
A+B=AB
Formula for decomposition reaction
AB=A+B
Formula for double-displacement reaction
AB+CD=AD+CB
Formula for single-displacement reaction
A+BC=B+AC
What is the molar mass of diborane?
B2H6
Which law implies that at constant temperature and pressure the molar volume of an ideal gas is constant?
Charles law
How many significant figures does number 68,080 have?
4 sig figs
Know how to find partial pressure of hydrogen
Total minus water vapor pressure
What is theoretical behavior of an ideal gas as it is cooked to absolute zero (0 K) at constant pressure?
The gas molecules get close enough to attract each other, liquefy, then solidify; no substance exists as a gas at 0 k.
Directly proportional- constant pressure and absolute temperature.
What is kinetic theory of matter
Gas molecules are continually moving about and colliding with each other and with surfaces.
Know the properties of gold
Au
What does 1.5 m equal?
Nano one billionth Micro one millionth Milli one thousandth Centi one hundredth Deci one tenth Kilo one thousand Mega one million
Name example of a chemical change
Fire burning something
What is open end manometer as shown in diagram and pressure of gas?
Add numbers if higher Mercury is on the open to air side
Subtract numbers if higher on side connected to gas
See question 48 & 49
Q
Smallest particle for element broken down without changing identity of element
Atom
Proton positive
Electron negative
Know about gold (III) ion (Au^3+)
Ok
Know examples of a chemical change
Distinct change in color
Formation of precipitate
Formation of gas
Open end manometer
Ok
Theoretical behavior of ideal gas
A gas that exactly obeys the assumptions of the kinetic theory
Know kinetic theory matter
Ok
What does 1.5 m equal?
A
What is a physical property?
A change that does not change the composition of a substance
Know empirical formula for beta carotene
Simplest ratio of atoms
Know 4 basic laws
Ideal gas law Boyle Charles Combined Daltons
What does 5300 g equal?
Ok
Know how to balance equations
Q
What is symbol Pb?
Lead
Know molecular process when she and water mix
Q
Quantity of ratio to mass to volume
Density
What is silicon symbol
Si
Know diffusion of gas
Total minus water vapor pressure
What is CaCO 3
Calcium carbonate
What is HF
Helium fluoride
What is negatively charged subatomic particles in an atom
Electron
