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Chemistry > Deck 10 (181 - 200) > Flashcards

Deck 10 (181 - 200) Flashcards

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1
Q
  1. PIC
A
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2
Q
  1. Rusting of iron is a:

a. physical change
b. chemical change
c. compound
d. state of matter

A

chemical change

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3
Q
  1. Which of the following formulas is the correct one for magnesium sulphate?

a. MgSO3
b. Mg2SO3
c. MgS
d. MgSO4

A

MgSO4

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4
Q
  1. Fructose is:

a. table sugar
b. fruit sugar
c. milk sugar
d. malt sugar

A

fruit sugar

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5
Q
  1. If we remove one hydrogen atom from alkane, we get …
A

alkyl group

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6
Q
  1. What scientist is famous for his equilibrium principle?
A

Le Chatelier

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7
Q
  1. Hygroscopic means …
A

readily absorbs water

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8
Q
  1. What is the total number of sigma bonds found in 1-butene?
A

11
(8 in google)

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9
Q
  1. The mass number of an atom is determined by …
A

adding the neutrons and protons

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10
Q
  1. What is the molar concentration of a solution by dissolving 5g of FeSO4 in water and dilute to a final volume of 500ml ?
    Mm(FeSO4) = 152 g.mol-1
A

0.0658 mol.dm-3

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11
Q
  1. Hydrocarbon which contains one carbon-carbon triple bond is …
A

alkyne

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12
Q
  1. What is the formula for the ion formed when strontium 38Sr loses its valence electrons?
A

Sr2+

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13
Q
  1. Ethers are formed by the attachment of:

a. two alkyl groups to same oxygen atom
b. two alyl groups to different oxygen atoms
c. three alkyl groups to one oxygen atom
d. four alkyl groups to one oxygen atom

A

two alkyl groups to same oxygen atom

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14
Q
  1. Which coefficients correctly balance the formula equation below?

KClO3(s) -> KCl(s) + O2(g)

a. 1, 1, 1
b. 1, 1, 3
c. 2, 2, 3
d. 2, 1, 1

A

2, 2, 3

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15
Q
  1. PIC
A
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16
Q
  1. Heptane has:

a. two carbon atoms
b. five carbon carbon atoms
c. six carbon atoms
d. seven carbon atoms

A

seven carbon atoms

17
Q
  1. Which two substances are always produced by a neutralisation reaction?
A

water and a salt

18
Q
  1. PIC
A
19
Q
  1. Saturated hydrocarbons have:

a. carbon-carbon single bonds
b. carbon-carbon double bonds
c. carbon-carbon triple bonds
d. carbon-carbon quad bonds

A

carbon-carbon single bonds

20
Q
  1. What is the numerical value of Avogadro constant?
A

6.023 x 10*23 mol-1

Chemistry (25 decks)

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