1)The three-dimensional shape around a single-bonded carbon atom is a)   Linear b)   Trigonal planar c)   Tetrahedral d)   Pyramidal     2

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1)The three-dimensional shape around a single-bonded carbon atom is

a)   Linear

b)   Trigonal planar

c)   Tetrahedral

d)   Pyramidal

 

 

2.   The polymerization of propene, CH₃CH=CH₂ can be classified as

a)   hydrolysis reaction

b)   an elimination reaction

c)   a substitution reaction

d)   an addition reaction

 

3.   the chemical reaction between an organic acid and an alcohol is known as:

a)   saponification

b)   hydrogenation

c)   hydrolysis

d)   esterification

 

4.   The oxidation of an aldehyde produces?

a)   An alcohol

b)   A carboxylic acid

c)   A ketone

d)   A halogen

 

5.   The alkyl radical C₆H₁₂ is called

a)   Heptyl

b)   Hexyl

c)   Heptanyl

d)   Hexanyl

 

 

 

6.   When an alkene is hydrated the product is a (n):

a)   Acid

b)   Aldehyde

c)   Ketone

d)   Alcohol

 

7.   From the results of the "Gold Foil Experiment", Rutherford concluded that atoms contain very small nuclei because:

a)   The alpha particles were small.

b)   A low percentage of alpha particles went straight through the foil.

c)   A small number of alpha particles were deflected through the large angles

d)   Gold is such a heavy element

 

8.   Who postulated that electrons can only make certain energy jumps from level to level?

a)   Bohr

b)   Moseley

c)   Rutherford

d)   Schroedinger

 

9.   In modern chemical theory an occupied orbital is pictured to be:

a)   A spherical or dumbbell-shaped route traced by the electron in its rapid movement

b)   A region in space having a precise shape, which is completely filled by a dense electron cloud

c)   A region of space in which the probability of finding an electron is high

d)   An elliptical pathway, outside the nucleus followed by an electron

 

10.For the valence shell, the correct representation of carbon in its ground state is

a)   2s²2p⁴

b)   1s²2s²2p²

c)   2s²2p²

d)   3s²3p⁴

 

 

 

11.Which of the following atoms in the ground state, would contain an electron with the quantum numbers?

n=3     l = 1      m=1    m_l= +1/2

 

a)   Na

b)   O

c)   F

d)   Ne