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WorksheetsPraxis Review
Total questions: 23
Worksheet time: 16mins
Which theorist used a cathode ray to determine that atoms have negatively charged particles?
Thompson
Dalton
Bohr
Democritus
Rutherford used what item to discover that the nucleus of an atom is where most of the mass is and it contains positively charged particles?
Aluminum Foil
Gold Foil
Copper Wire
Sheet of Silver
Which theorist determined that electrons have different energy and orbit the nucleus of an atom?
Democritus
Aristotle
Thompson
Bohr
Who was the Greek philosopher who first suggested that matter was composed of indivisible particles which he referred to as atomos?
Dalton
Democritus
Einstein
Plato
The first universally accepted theory on atoms was proposed in 1803 by what English school teacher?
Winston Churchill
John Dalton
James Bond
J J Thomson
Which of the following would most likely lead to a spontaneous reaction.
A high negative enthalpy.
A low negative enthalpy.
A high positive enthalpy.
A low positive enthalpy.
For the process at 250C : I2(g) →I2(s). What are the signs for ΔG, ΔH and ΔS?
ΔG + ΔH - ΔS -
ΔG - ΔH - ΔS -
ΔG - ΔH + ΔS +
ΔG - ΔH + ΔS +
1. Given the following information, calculate ΔG0 for the reaction below at 250C: (K = 0C + 273)
SnCl4(l) + 2 H20(l) → SnO2(S) + 4HCl(g),
ΔH0=+133.0 kJ and ΔS0 =+401.5 J/K
-252.6 kJ
-13.4 kJ
13.4 kJ
252.6 kJ
Energy can never be created nor destroyed. Which law does this refer to?
0th law of thermodynamics
1st law of thermodynamics
2nd law of thermodynamics
3rd law of thermodynamics
As temperature decreases, entropy decreases. At absolute zero, entropy is zero. Which law does this refer to?
0th law of thermodynamics
1st law of thermodynamics
2nd law of thermodynamics
3rd law of thermodynamics
The entropy of the universe is always increasing. Which law does this refer to?
0th law of thermodynamics
1st law of thermodynamics
2nd law of thermodynamics
3rd law of thermodynamics
From lowest entropy to highest entropy, the states of matter go in this order:
solid -> liquid -> gas -> plasma
plasma -> gas -> liquid -> solid
gas -> plasma -> liquid -> solid
solid -> liquid -> plasma -> gas
It depends on the temperature of the object
True or False: Entropy increases as temperature increases
True
False
If A has the same temperature as B and C. B and C are in thermal equilibrium. Which law does this refer to?
0th law of thermodynamics
1st law of thermodynamics
2nd law of thermodynamics
3rd law of thermodynamics
The force of attraction between molecules is ___.
intermolecular forces
bridge forces
chemical bonds
pressure exerted by a gas is due to numerous collisions of molecules with one another and with the container is supported by which theory?
Law of Conservation of Matter
Kinetic Molecular Theory
2nd Law of Thermodynamics
Electron Theory
________ energy is stored in chemical bonds, and is shown through intermolecular forces
electrical
electromagnetic
nuclear
chemical
________ energy displays the movement of electrons through a material
electrical
nuclear
chemical
mechanical
this type of energy is stored within an atom's nucleus
electrical
chemical
nuclear
thermal
the total kinetic energy due to randomness is ...
thermal energy
electrical energy
nuclear energy
electromagnetic energy
which is spontaneous in the forward reaction?
G < 0
G > 0
G = 0
which is spontaneous in the forward reaction?
H > 0
H < 0
H = 0
which is spontaneous in the forward reaction?
S < 0
S > 0
S = 0
