GoConqr hat ein neues Design! Sag uns, wie es dir gefällt.

Kostenlos registrieren

Quiz

OCR B A Level Chemistry Specimen Papers Questions

Alex Lyes 14 Fragen 5,0 (1 Bewertung)

Quiz starten

Dieses Quiz enthält Fragetypen, die sich im gewohnten Player öffnen.

Fragen in diesem Quiz (14)

  1. 1A flame test should be carried out using a [blank_start]nichrome[blank_end] wire and [blank_start]concentrated[blank_end] HCl. If it was calcium that was being tested the flame would be [blank_start]brick-red[blank_end].
    1. Anichrome
    2. Bconcentrated
    3. Cbrick-red
  2. 2To test for the presence of iron(III) chloride in a sample of limestone you would add a solution of [blank_start]silver[blank_end] nitrate to the sample and a [blank_start]white[blank_end] precipitate will be formed for the chloride ions. You would also do a test for the Fe(III) by adding [blank_start]sodium hydroxide[blank_end] giving a [blank_start]brown[blank_end] precipirate.
    1. Asilver
    2. Bwhite
    3. Csodium hydroxide
    4. Dbrown
  3. 3The reagent used with sodium iodide to produce purer hydrogen iodide is [blank_start]phosphoric acid[blank_end].
    1. Aphosphoric acid
  4. 4The absorption of UV radiation by ozone is important for human life since UV radiation causes damage to [blank_start]skin[blank_end].
    1. Askin
  5. 5The shape of an ozone molecule is [blank_start]bent[blank_end] because there are [blank_start]3[blank_end] groups of electrons around a central O atom. The bond angle could be [blank_start]120°[blank_end].
    1. Abent
    2. Btriangular planar
    3. Cpyrimidal
    4. D3
    5. E4
    6. F120°
    7. G109.5°
    8. H107°
  6. 6First ionisation enthalpy [blank_start]increases[blank_end] across a period since the atoms [blank_start]increase[blank_end] in size meaning there are [blank_start]more protons & neutrons[blank_end] in the nucleus. The outer shell electrons are roughly the same distance from the nucleus since they are in the same shell so the attraction to the electrons is [blank_start]greater[blank_end] to they are [blank_start]more difficult[blank_end] to remove.
    1. Aincreases
    2. Bdecreases
    3. Cincrease
    4. Ddecrease
    5. Emore protons & neutrons
    6. Fless protons & neutrons
    7. Ggreater
    8. Hweaker
    9. Imore difficult
    10. Jeasier
  7. 7Rate of reaction decreases as temperature decreases since the molecules have [blank_start]less[blank_end] kinetic energy so there will be fewer collisions with sufficient acitvation [blank_start]enthalpy[blank_end] and also fewer collisions per second.
    1. Aless
    2. Benthalpy
  8. 8An equilibrium reaction is exothermic, increasing the temperature will shift the position of equilibrium in the [blank_start]endothermic[blank_end] direction (to the [blank_start]left[blank_end]) which will mean the concentration of product will [blank_start]decrease[blank_end].
    1. Aendothermic
    2. Bexothermic
    3. Cleft
    4. Dright
    5. Edecrease
    6. Fincrease
  9. 9% yield may be low if the reaction [blank_start]hasn't[blank_end] gone to completion or if there was [blank_start]loss[blank_end] of materials when transfering between vessels.
    1. Ahasn't
    2. Bloss
  10. 10Reactions go [blank_start]faster[blank_end] at higher temperatures since the particles have [blank_start]more[blank_end] kinetic energy and a larger proportion have enough kinetic energy for [blank_start]sucessful[blank_end] collisions to take place therefore the rate of reaction is [blank_start]faster[blank_end].
    1. Amore
    2. Bsucessful
    3. Cfaster
    4. Dfaster

Informationen

Beschreibung
A-Level Chemistry Quiz am OCR B A Level Chemistry Specimen Papers Questions, erstellt von Alex Lyes am 24/05/2016.
Sprache
English
Aufrufe
119
Bewertung
5,0 von 5 · 1 Bewertung
Bewerte dieses Quiz
Bewerte dieses Quiz

Feedback

Worum geht es?

Wie gefällt dir das neue Design?

Dein Eindruck