Chemistry Revision Questions C1a Topic 6

Card Set Information

Author:
daniel99
ID:
25108
Filename:
Chemistry Revision Questions C1a Topic 6
Updated:
2010-06-29 02:24:57
Tags:
Chemistry revision
Folders:

Description:
10 multiple choice questions
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user daniel99 on FreezingBlue Flashcards. What would you like to do?


  1. What is the chemical difference between natural vanillin and artificial vanillin?

    A) Natural vanillin is toxic to humans.
    B) Artificial vanillin contains special chemicals that prevent certain diseases.
    C) There is no chemical difference.
    D) Artificial vanillin is sweeter.
    C) There is no chemical difference.

    There may be a slight difference is appearance or taste, but chemically, a natural product and an artificial product are totally identical.
    (this multiple choice question has been scrambled)
  2. Which of the following statements about the pH scale is correct?

    A) Acids are red, alkalis are green and neutral is white.
    B) Acids are purple, alkalis are red and neutral is green.
    C) Acids are from 8-14
    D) Acids are red, alkalis are purple and neutral is green.
    D) Acids are red, alkalis are purple and neutral is green.

    It slides from a dark red though orange, and yellow for acids (numbers 1-6), then green is 7 for neutral and then it goes from blue up to purple for alkalis (8-14)
    (this multiple choice question has been scrambled)
  3. Which of the following two statements are correct?
    :- Metal oxides and metal hydroxides are generally alkalis.
    :- This means they'll react with acids to form a salt and water.

    A) Neither of them
    B) Both of them
    C) 1 only
    D) 2 only
    B) Both of them.

    Acid + Metal oxide --> Salt + Water
    Acid + Metal Hydroxide --> Salt + Water
    (this multiple choice question has been scrambled)
  4. What type of reaction is this?

    A) Thermal decomposition
    B) Neutralisation
    C) Oxidation
    D) Hydration
    B) Neutralisation

    If an acid + an alkali produces a salt, it is a neutralisation reaction.
    (this multiple choice question has been scrambled)
  5. Define 'corrosive'.

    A) Attacks and destroys living tissue
    B) Catches fire easily
    C) Can cause death
    D) Can cause blistering of the skin
    A) Attacks and destroys living tissue

    Catches fire easily - oxidising
    Can cause death - toxic
    Can cause blistering of the skin - irritant
    (this multiple choice question has been scrambled)
  6. Calcium carbonate --> Calcium oxide + blank
    What is the blank in this thermal decomposition reaction.

    A) Oxygen
    B) Carbon dioxide
    C) Water
    D) Carbon monoxide
    B) Carbon dioxide

    A carbonate will always produce carbon dioxide in a thermal decomposition reaction.
    (this multiple choice question has been scrambled)
  7. How is magnesium extracted from its ore?

    A) By heating with carbon
    B) With a hammer and chisel.
    C) By electrolysis
    D) Magnesium does not have an ore.
    C) By electrolysis

    Magnesium is very reactive, so must be extracted by using electrolysis.
    (this multiple choice question has been scrambled)
  8. 2Mg + O2 --> 2MgO
    What type of reaction is this?

    A) Thermal Decomposition
    B) Dehydration
    C) Oxidation
    D) Reduction
    C) Oxidation

    When oxygen is added to a metal to create a metal oxide.
    (this multiple choice question has been scrambled)
  9. How do you test for chlorine gas?

    A) With a lighted splint
    B) With a glowing splint
    C) It will bleach litmus paper, turning it white.
    D) It will turn red litmus paper blue
    C) It will bleach litmus paper, turning it white.

    A glowing splint is used for oxygen, a lighted splint is used for hydrogen and ammonia will turn red litmus paper blue.
    (this multiple choice question has been scrambled)
  10. Which method of gas collection would you use for chlorine?

    A) Upward delivery
    B) Over water
    C) Downward delivery
    D) Distillation
    C) Downward delivery

    Chlorine is heavier than air.
    (this multiple choice question has been scrambled)

What would you like to do?

Home > Flashcards > Print Preview