AnswersChemistry - SC3210 A-CRCumulative Exam

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What overall effect does adding a catalyst have on a chemical reaction?

A
It slows the reaction.
B
It speeds up the reaction.
C
It reduces the concentration of products.
D
It increases the concentration of reactants.
22
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Which is the IUPAC name of O3?

A
dioxide
B
oxygen
C
trioxygen
D
monoxide
23

Which statement about hydrogen bonds is true?

A
They are the only force that allows a gecko to climb up glass.
B
They are the weakest of the intermolecular forces.
C
They are much stronger than intramolecular forces.
D
They help water striders walk on water by creating surface tension.
24

What is the predicted order of first ionization energies from highest to lowest for lithium (Li), sodium (Na), potassium (K), and rubidium (Rb)?

A
Rb > K > Na > Li
B
K > Rb > Na > Li
C
Li > Na > K > Rb
D
Rb > K > Li > Na
25

What did J. J. Thomson observe when he applied electric voltage to a cathode ray tube in his famous experiment?

A
The stream of cathode ray particles was moving very slowly.
B
The glass opposite of the negative electrode started to glow.
C
The electric voltage had little effect on the stream of particles.
D
The tube contained two pieces of metal that served as electrodes.

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