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SAT 2 Chemistry - Revision

Total questions: 37

Worksheet time: 28mins

Name
Class
Date
1.

What are the simplest whole number coefficients that balance this equation?

______C4H10 + ______O2 ---> _____CO2+ _____ H2O

a)

1,6,4,2

b)

2,13,8,10

c)

1,6,1,5

d)

3,10,16,20

e)

4,26,16,20

2.

What volume of gas, in liters, would 2.0 moles of hydrogen occupy at STP?

a)

11.2

b)

22.4

c)

33.6

d)

44.8

e)

67.2

3.

What is the maximum number of electrons held in the f orbitals?

a)

2

b)

4

c)

8

d)

10

e)

14

4.

How many atoms are present in the formula MgSO4.7H2O?

a)

8

b)

13

c)

23

d)

27

e)

31

5.

If an element has an atomic number of 11, it will combine most readily with an element that has an electron configuration of

a)

1s2 2s2 2p6 3s2 3p1

b)

1s2 2s2 2p6 3s2 3p2

c)

1s2 2s2 2p6 3s2 3p3

d)

1s2 2s2 2p6 3s2 3p4

e)

1s2 2s2 2p6 3s2 3p5

6.

An example of a physical property is

a)

rusting

b)

decay

c)

souring

d)

low melting point

e)

high heat of formation

7.

A gas at STP that contains 6.02 X 1023 atoms and forms diatomic molecules will occupy

a)

11.2L

b)

22.4L

c)

33.6L

d)

67.2L

e)

78.4L

8.

When excited electrons cascade to lower energy levels in an atom,

a)

visible light is always emitted

b)

the potential energy of the atom increases

c)

the electron always fall back to the first energy level

d)

the electrons fall indiscriminately to all levels

e)

the electrons fall back to a lower unfilled energy level.

9.

Mass spectroscopy uses the concept that

a)

charged particles are evenly deflected in a magnetic field

b)

charged particles are deflected in a magnetic field inversely to the mass of the particles

c)

particles of heavier mass are deflected in a magnetic field to a greater degree than lighter particles

d)

particles are evenly deflected in a magnetic field

e)

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.

10.

The bond that describes an interaction between 2 orbitals that is not symmetrical about a line between the two atoms' nuclei is called

a)

a pi bond

b)

a sigma bond

c)

a hydrogen bond

d)

a covalent bond

e)

an ionic bond

11.

What is the boiling point of water at the top of Pikes Peak? (Pikes Peak is well above sea level)

a)

It is 100OC

b)

It is >100OC since the pressure is less than at ground level.

c)

It is <100OC since the pressure is less than at ground level.

d)

It is >100OC since the pressure is greater than at ground level.

e)

It is <100OC since the pressure is greater than at ground level.

12.

Which of the following statements is true?

a)

A catalyst cannot lower the activation energy

b)

A catalyst can lower the activation energy

c)

A catalyst affects only the activation energy of the forward reaction

d)

A catalyst affects only the activation energy of the reverse reaction

e)

A catalyst is permanently changed after the activation energy is reached

13.

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.

a)

I only

b)

III only

c)

I and II only

d)

II and III only

e)

I, II and III

14.

What occurs when a reaction is at equilibrium and more reactant is added to the container?

a)

The equilibrium remains unchanged.

b)

The forward reaction rate increases.

c)

The reverse reaction rate increases.

d)

The forward reaction rate decreases.

e)

The reverse reaction rate decreases.

15.

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.

a)

241.8kJ

b)

483.6kJ

c)

967.2kJ

d)

1 934kJ

e)

3 869 kJ

16.

What is the Ksp for silver acetate if a saturated solution contains 2 X10-3 moles of silver ion/liter of solution

a)

2 X 10-3

b)

2 X 10-6

c)

4 X 10-3

d)

4 X 10-6

e)

4 X 106

17.

Which of the following correctly completes this nuclear reaction: 147N + 42 Ne --> _____________ + 11H?

a)

178O

b)

169O

c)

178N

d)

177N

e)

168O

18.

A sample of ethyl alcohol and water that were previously mixed in the laboratory must now be separated. Which separation technique could accomplish this?

a)

Filtration

b)

Magnetism

c)

Visual inspection

d)

Distillation

e)

Separating funnel

19.

Which of the statements is NOT correct?

a)

In an exothermic reaction, ∆H is negative and the enthalpy decreases.

b)

In an endothermic reaction, ∆H is positive and the enthalpy increases.

c)

In a reaction where ∆G is negative, the forward reaction is spontaneous.

d)

In a reaction where ∆G is positive, ∆S may also be positive.

e)

In a reaction where ∆H is positive and ∆S is negative, the forward reaction is spontaneous.

20.

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

a)

hydrogen bonding

b)

van der waals forces

c)

covalent bonding

d)

ionic bonding

e)

coordinate covalent bonding

21.

Which of these statements is the best explanation for the sp3 hybridization of carbon's electrons in methane, CH4?

a)

The new orbitals are one s orbital and three p orbitals

b)

The s electron is promoted to the p orbitals.

c)

Four new and equivalent orbitals are formed

d)

The s orbital electron loses energy to fall back into a partially filled p orbital.

e)

The s orbital is deformed into a p orbital

22.

In this graphic representation of a chemical reaction, which arrow depicts the activation energy of the forward reaction?

a)

A

b)

B

c)

C

d)

D

e)

E

23.

Aromatic hydrocarbons are represented by which of the following?

a)

I only

b)

III only

c)

I and II only

d)

II and III only

e)

I and II only

24.

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

a)

730 mm - 40.8 mm

b)

730 mm - 30.0 mm

c)

730 mm - 30.0mm/13.6 + 40.8 mm

d)

730 mm - 30.0mm/13.6 - 40.8 mm

e)

730 mm - 30.0mm/13.6 - 30.0 mm

25.

The shape of a OCl2 molecule is described as

a)

bent

b)

trigonal planar

c)

linear

d)

trigonal pyramidal

e)

tetrahedral

26.

What is the pH of an acetic acid solution if the [H3O+] = 1 X 10-4 mole/liter?

a)

1

b)

2

c)

3

d)

4

e)

5

27.

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?

a)

paradichlorobenzene, C6H4Cl2

b)

sodium chloride, NaCl

c)

aluminium chloride, AlCl3

d)

ethanol, C2H5OH

e)

sucrose, C12H22O11

28.

Zn(s) + SnCl2(aq) --> Sn(s) + ZnCl2(aq)

and

Sn(s) + CuCl2(aq) --> Cu(s) + SnCl2(aq)

Substances acting as oxidizing agents include

a)

tin(II) chloride

b)

tin

c)

zinc chloride

d)

both tin and copper(II) chloride

e)

both zinc chloride and copper(II) chloride

29.

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

a)

the transfer of electrons

b)

the transfer of protons

c)

the transfer of mass

d)

the transfer of ions

e)

the transfer of atoms

30.

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

a)

Sn

b)

Cu

c)

Zn

d)

Cl

e)

ZnCl2

31.

The temperature and pressure at which 3 states of a substance may coexist.

a)

Boiling point

b)

Melting point

c)

Critical point

d)

Freezing point

e)

Triple point

32.

The temperature at which a solid becomes a liquid

a)

Boiling point

b)

Melting point

c)

Critical point

d)

Freezing point

e)

Triple point

33.

The temperature of 373K for H2O at standard pressure

a)

Boiling point

b)

Melting point

c)

Critical point

d)

Freezing point

e)

Triple point

34.

The temperature at which the vapour pressure of a liquid equals the atmospheric pressure

a)

Boiling point

b)

Melting point

c)

Critical point

d)

Freezing point

e)

Triple point

35.

The ∆H of the reaction to form CO from C + O2

a)

A

b)

B

c)

C

d)

D

e)

E

36.

The ΔH of the reaction to form CO2 from CO + O2

a)

A

b)

B

c)

C

d)

D

e)

E

37.

The ΔH of the reaction for form CO2 from C + O2

a)

A

b)

B

c)

C

d)

D

e)

E