NEW
Font size
WorksheetsSAT 2 Chemistry - Revision
Total questions: 37
Worksheet time: 28mins
What are the simplest whole number coefficients that balance this equation?
______C4H10 + ______O2 ---> _____CO2+ _____ H2O
1,6,4,2
2,13,8,10
1,6,1,5
3,10,16,20
4,26,16,20
What volume of gas, in liters, would 2.0 moles of hydrogen occupy at STP?
11.2
22.4
33.6
44.8
67.2
What is the maximum number of electrons held in the f orbitals?
2
4
8
10
14
How many atoms are present in the formula MgSO4.7H2O?
8
13
23
27
31
If an element has an atomic number of 11, it will combine most readily with an element that has an electron configuration of
1s2 2s2 2p6 3s2 3p1
1s2 2s2 2p6 3s2 3p2
1s2 2s2 2p6 3s2 3p3
1s2 2s2 2p6 3s2 3p4
1s2 2s2 2p6 3s2 3p5
An example of a physical property is
rusting
decay
souring
low melting point
high heat of formation
A gas at STP that contains 6.02 X 1023 atoms and forms diatomic molecules will occupy
11.2L
22.4L
33.6L
67.2L
78.4L
When excited electrons cascade to lower energy levels in an atom,
visible light is always emitted
the potential energy of the atom increases
the electron always fall back to the first energy level
the electrons fall indiscriminately to all levels
the electrons fall back to a lower unfilled energy level.
Mass spectroscopy uses the concept that
charged particles are evenly deflected in a magnetic field
charged particles are deflected in a magnetic field inversely to the mass of the particles
particles of heavier mass are deflected in a magnetic field to a greater degree than lighter particles
particles are evenly deflected in a magnetic field
multiple ions from the sample under investigation are separated according to their specific mass-to-charge ratio (m/z), and then the relative abundance of each ion type is recorded.
The bond that describes an interaction between 2 orbitals that is not symmetrical about a line between the two atoms' nuclei is called
a pi bond
a sigma bond
a hydrogen bond
a covalent bond
an ionic bond
What is the boiling point of water at the top of Pikes Peak? (Pikes Peak is well above sea level)
It is 100OC
It is >100OC since the pressure is less than at ground level.
It is <100OC since the pressure is less than at ground level.
It is >100OC since the pressure is greater than at ground level.
It is <100OC since the pressure is greater than at ground level.
Which of the following statements is true?
A catalyst cannot lower the activation energy
A catalyst can lower the activation energy
A catalyst affects only the activation energy of the forward reaction
A catalyst affects only the activation energy of the reverse reaction
A catalyst is permanently changed after the activation energy is reached
According to placement in the Periodic Table, which statement(s) regarding the first ionization energies of certain elements should be true?
I. Li has a higher value than Na
II. K has a higher value than Cs
III. Na has a higher value than Al.
I only
III only
I and II only
II and III only
I, II and III
What occurs when a reaction is at equilibrium and more reactant is added to the container?
The equilibrium remains unchanged.
The forward reaction rate increases.
The reverse reaction rate increases.
The forward reaction rate decreases.
The reverse reaction rate decreases.
How much heat energy is released when 8 g of hydrogen are burned?
The thermal equation is 2H2(g) + O2(g) --> 2H2O(g) +483.6kJ.
241.8kJ
483.6kJ
967.2kJ
1 934kJ
3 869 kJ
What is the Ksp for silver acetate if a saturated solution contains 2 X10-3 moles of silver ion/liter of solution
2 X 10-3
2 X 10-6
4 X 10-3
4 X 10-6
4 X 106
Which of the following correctly completes this nuclear reaction: 147N + 42 Ne --> _____________ + 11H?
178O
169O
178N
177N
168O
A sample of ethyl alcohol and water that were previously mixed in the laboratory must now be separated. Which separation technique could accomplish this?
Filtration
Magnetism
Visual inspection
Distillation
Separating funnel
Which of the statements is NOT correct?
In an exothermic reaction, ∆H is negative and the enthalpy decreases.
In an endothermic reaction, ∆H is positive and the enthalpy increases.
In a reaction where ∆G is negative, the forward reaction is spontaneous.
In a reaction where ∆G is positive, ∆S may also be positive.
In a reaction where ∆H is positive and ∆S is negative, the forward reaction is spontaneous.
The intermolecular force that is most significant in explaining the variation of the boiling point of water from the boiling points of similarly structured molecules is
hydrogen bonding
van der waals forces
covalent bonding
ionic bonding
coordinate covalent bonding
Which of these statements is the best explanation for the sp3 hybridization of carbon's electrons in methane, CH4?
The new orbitals are one s orbital and three p orbitals
The s electron is promoted to the p orbitals.
Four new and equivalent orbitals are formed
The s orbital electron loses energy to fall back into a partially filled p orbital.
The s orbital is deformed into a p orbital
In this graphic representation of a chemical reaction, which arrow depicts the activation energy of the forward reaction?
A
B
C
D
E
Aromatic hydrocarbons are represented by which of the following?
I only
III only
I and II only
II and III only
I and II only
If you collected hydrogen gas by the displacement of water and under the conditions shown,
which of the following would give you the pressure of the hydrogen in the bottle
730 mm - 40.8 mm
730 mm - 30.0 mm
730 mm - 30.0mm/13.6 + 40.8 mm
730 mm - 30.0mm/13.6 - 40.8 mm
730 mm - 30.0mm/13.6 - 30.0 mm
The shape of a OCl2 molecule is described as
bent
trigonal planar
linear
trigonal pyramidal
tetrahedral
What is the pH of an acetic acid solution if the [H3O+] = 1 X 10-4 mole/liter?
1
2
3
4
5
Which of the substances listed decreases the freezing point of benzene (C6H6) more than the others if a lab tech tries to dissolve 500.0 g of benzene?
paradichlorobenzene, C6H4Cl2
sodium chloride, NaCl
aluminium chloride, AlCl3
ethanol, C2H5OH
sucrose, C12H22O11
Zn(s) + SnCl2(aq) --> Sn(s) + ZnCl2(aq)
and
Sn(s) + CuCl2(aq) --> Cu(s) + SnCl2(aq)
Substances acting as oxidizing agents include
tin(II) chloride
tin
zinc chloride
both tin and copper(II) chloride
both zinc chloride and copper(II) chloride
Zn(s) + SnCl2(aq) --> Sn(s) + ZnCl2(aq)
and
Sn(s) + CuCl2(aq) --> Cu(s) + SnCl2(aq)
The significant driving force associated with both of these reactions is
the transfer of electrons
the transfer of protons
the transfer of mass
the transfer of ions
the transfer of atoms
Zn(s) + SnCl2(aq) --> Sn(s) + ZnCl2(aq)
and
Sn(s) + CuCl2(aq) --> Cu(s) + SnCl2(aq)
The most active of the metals shown is
Sn
Cu
Zn
Cl
ZnCl2
The temperature and pressure at which 3 states of a substance may coexist.
Boiling point
Melting point
Critical point
Freezing point
Triple point
The temperature at which a solid becomes a liquid
Boiling point
Melting point
Critical point
Freezing point
Triple point
The temperature of 373K for H2O at standard pressure
Boiling point
Melting point
Critical point
Freezing point
Triple point
The temperature at which the vapour pressure of a liquid equals the atmospheric pressure
Boiling point
Melting point
Critical point
Freezing point
Triple point
The ∆H of the reaction to form CO from C + O2
A
B
C
D
E
The ΔH of the reaction to form CO2 from CO + O2
A
B
C
D
E
The ΔH of the reaction for form CO2 from C + O2
A
B
C
D
E
