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    Monthly Test 1 Term 1 Chemistry Grade 9

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    Ria Mandasari
    This document contains a chemistry test from Gandhi School Jakarta for Grade 9 students. [1] The test has two sections - Section A with 5 multiple choice questions worth 5 marks total and Section B with 4 multi-part questions worth 15 marks total. [2] The test covers topics such as chemical reactions, separation techniques, chromatography, and the kinetic particle model. [3] Students have 45 minutes to complete the test which is out of a maximum of 20 marks.

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    Monthly Test 1 Term 1 Chemistry Grade 9

    Uploaded by

    Ria Mandasari
    66 views4 pages
    This document contains a chemistry test from Gandhi School Jakarta for Grade 9 students. [1] The test has two sections - Section A with 5 multiple choice questions worth 5 marks total and Section B with 4 multi-part questions worth 15 marks total. [2] The test covers topics such as chemical reactions, separation techniques, chromatography, and the kinetic particle model. [3] Students have 45 minutes to complete the test which is out of a maximum of 20 marks.

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    This document contains a chemistry test from Gandhi School Jakarta for Grade 9 students. [1] The test has two sections - Section A with 5 multiple choice questions worth 5 marks total and Section B with 4 multi-part questions worth 15 marks total. [2] The test covers topics such as chemical reactions, separation techniques, chromatography, and the kinetic particle model. [3] Students have 45 minutes to complete the test which is out of a maximum of 20 marks.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    66 views4 pages

    Monthly Test 1 Term 1 Chemistry Grade 9

    Uploaded by

    Ria Mandasari
    This document contains a chemistry test from Gandhi School Jakarta for Grade 9 students. [1] The test has two sections - Section A with 5 multiple choice questions worth 5 marks total and Section B with 4 multi-part questions worth 15 marks total. [2] The test covers topics such as chemical reactions, separation techniques, chromatography, and the kinetic particle model. [3] Students have 45 minutes to complete the test which is out of a maximum of 20 marks.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 4

    GANDHI SCHOOL JAKARTA

    INTERNATIONAL MIDDLE SCHOOL


    CHEMISTRY
    FIRST MONTHLY TEST AUGUST - 2020

    Name : ………………………………. Date : FRIDAY 31ST August 2020


    GRADE : 9 A Duration : 45 minutes
    Subject Teacher : Mr. Denny Max Marks : 20
    ___________________________________________________________________________
    Instructions to the candidates :
     Answer all the questions.
     The marks for each question are shown in [ ] at the end of each question or part question.
     Write your answers neatly in the space provide. You may loss marks on unnecessary answers.
     Scientific Calculators are allowed. Correct your answer to 2 decimal places.
    SECTION A (5 MARKS)
    1. Hydrogen chloride gas, HCl, reacts with ammonia gas, NH 3, to form solid ammonium chloride.
    The apparatus is set up as shown.
    After a few minutes, solid ammonium chloride forms where the two gases meet.

    The experiment is repeated using hydrogen bromide, HBr, in place of hydrogen chloride.
    How far along the tube does the solid ammonium bromide form?
    2. The melting points and boiling points of four substances are shown.
    Which substance is liquid at 100oC?

    Substance Melting point /oC Boiling point /oC


    A -203 -17
    B -25 50
    C 11 181
    D 463 972

    3. Which method should be used to separate a mixture of two liquids?


    a. Crystallisation
    b. Sublimation
    c. Fractional distillation
    d. Filtration
    4. Substance L melts at -7oC and is a brown liquid at room temperature.
    Which temperature is the boiling point of pure L?
    a. -77oC
    b. -7oC to +7oC
    c. 59oC
    d. 107oC to 117oC
    5. Chromatography is done on a mixture containing a drug. The drug has an Rf value of 0.66.
    The diagram is not drawn to scale.
    Which spot on the chromatogram represent the drug?
    SECTION B (15 MARKS)
    1. An important aspect of chemistry is purity and methods of purification.
    a. Give an example of substances used in everyday life which must be pure. (1)

    b. The following techniques are used to separate mixtures. (3)


    A. Simple distillation B. fractional distillation C. evaporation
    D. chromatopraphy E. filtration F. diffusion
    From the list, choose the most suitable technique to separate the following
    a. Methane from a mixture of the gases, methane and ethane
    b. Water from aqueous magnesium sulfate
    c. Glycine from a mixture of the amino acids, glycine and lysine
    d. Iron filings from a mixture of iron filings and water
    e. Zinc sulfate crystals from aqueous zinc sulfate
    f. Hexane from a mixture of the liquids, hexane and octane.

    2. Three dye mixtures, J, K and L were spotted onto a piece of chromatogram. Three pure dye, X, Y and Z
    were also spotted onto the same piece of paper.
    The diagram shows the results of this chromatography.

    a. Suggest why the base line was drawn in pencil and not in ink (1)
    b. Which dye mixture, J, K or L contain a dye which did not move during this chromatography? (1)
    c. Which dye mixture, J, K or L contains both dye X and dye Y? (1)
    d. Which dye micture J, K or L does not contain dye Z? (1)

    3. Substances can be classified as elements, compounds or mixtures.


    a. Mixtures can be separated by physical processes.
    A sequence of physical processes can be used to separate common salt (sodium chloride) from a
    mixture containing sand and common salt only.
    Give the order and the correct scientific terms for the physical processes used to separate the
    common salt from the mixture. (2)
    1. ………………………………………………………………………………………………………………………………….
    2. ………………………………………………………………………………………………………………………………….
    3. ………………………………………………………………………………………………………………………………….
    The boiling points of four different alcohols, A, B, C and D are shown.

    Alcohol A B C D
    Boiling point /oC 56 78 122 160
    b. A student suggested that the apparatus shown could be used to separate the mixture of alcohols.

    i. Apparatus X needs to have cold water flowing through it. Name apparatus X! (1)
    ii. Part of the fractionating column is missing. This means that the experiment will not work.
    What part is missing from the fractionating column? (1)
    iii. A hot water bath cannot be used to separate alcohols C and D.
    Explain why. (1)

    4. A crystal of blu dye was placed on top of some jelly. After 30 minutes some of the blue colour could be
    seen in the jelly. After 1 day the blue colour had spread out further into the jelly.

    Use the kinetic particle model of matter to explain these observations. (2)

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