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Chemistry > Deck 4 (61 - 80) > Flashcards

Deck 4 (61 - 80) Flashcards

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1
Q
  1. The reaction
    CH3-CH3 + Cl2 -> CH3-CH2-Cl + HCl
    is an example of:

a. addition
b. substitution
c. reduction
d. condensation

A

b. substitution

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2
Q
  1. How many protons and electrons are in an atom of lithium, 7/3LI?
A

3 and 3

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3
Q
  1. When ethanol undergoes a reaction with acetic acid it produces an ester and a second compound. The name of this compound is:

a. methanol acid
b. water
c. methyl alcohol
d. carbon dioxide

A

b. water

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4
Q
  1. Name the three states of matter …
A

solid, liquid & gas

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5
Q
  1. Alkanes are —– in water:

a. insoluble
b. soluble
c. solvent
d. dissociated

A

a. insoluble

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6
Q
  1. The noble gas notation for the electron configuration of bromine is [Ar] 3d10, 4s2, 4p5 .
    How many unpaired electrons are there in an atom of bromine in the ground state ?
A

1

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7
Q
  1. What is the main gas found in the air we breathe ?
A

nitrogen (around 78%)

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8
Q
  1. Ethylene is a —– molecule:

a. polar
b. non-polar
c. saturated
d. diatomic

A

b. non-polar

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9
Q
  1. The hydronium ion is:

a. H+
b. OH-
c. H3O+
d. H2+

A

c. H3O+

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10
Q
  1. Give the name to:

H2N–CH2–CH2–COOH

a. 3-aminopropanoic acid
b. 2-aminopropanoic acid
c. 1-aminopropanoic acid
d. 4-aminopropanoic acid

A

a. 3-aminopropanoic acid

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11
Q
  1. A solution that contains a large concentration of solute but can hold even more solute is:

a. unsaturated and dilute
b. saturated and dilute
c. unsaturated and concentrated
d. saturated and concentrated

A

c. unsaturated and concentrated

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12
Q
  1. In hydrocarbons, the C and H atoms are joined together by ?
A

covalent bonds

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13
Q
  1. The general electron configuration for all elements in group 15 (V. A) is:

a. ns2, np6
b. ns2, np5
c. ns2, np4
d. ns2, np3

A

d. ns2, np3

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14
Q
  1. The general formula for the alkanes is:

a. CnH2n+1
b. CnH2n+2 (same as D?)
c. CnH2n
d. CnH2n+2

A

d. CnH2n+2

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15
Q
  1. Which of the following particle has a positive charge:

a. proton
b. neutron
c. anion
d. electron

A

a. proton

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16
Q
  1. The main component of natural gas is:

a. methane
b. ethane
c. ethene
d. butane

A

a. methane

17
Q
  1. According to the Bronsted-Lowry theory, an acid is a:

a. proton acceptor
b. proton
c. proton donor
d. proton destroyer

A

c. proton donor

18
Q
  1. When a solution has a pH of 4, what is the pOH of that solution?
A

10

19
Q
  1. What is the name given to the substances that are initially involved in a chemical reaction ?
A

reactants

20
Q
  1. What compounds are produced when ethanol is burned completely in air?
A

carbon dioxide and water

Chemistry (25 decks)

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