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Chapter 4 Grade 10 SABIS chemistry Quiz Level L Part 1

Hisham Mahmoud 11 Fragen

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  1. 1Which of the following is a physical change? Which is a chemical change?
    1. Heating wax until it melts [blank_start]Physical[blank_end]
    2. Crush some salt crystals into a powder [blank_start]Physical[blank_end]
    3. Boiling water until it evaporates, then condensing the
    steam. [blank_start]Physical[blank_end]
    4. Boiling an egg in boiling water for two minutes, then
    cooling the water. [blank_start]Physical[blank_end]
    5. Heating a piece of paper until it turns black, then cooling
    it. [blank_start]Physical[blank_end]
    6. Heating a mixture of hydrogen and oxygen until it
    “pops”, and then cooling the gases to a liquid. [blank_start]Physical[blank_end]
    7. Dissolving salt into water to make a solution [blank_start]Physical[blank_end]
    8. Cooking a steak until it is well done [blank_start]Physical[blank_end]
    9. Burning magnesium ribbon in air [blank_start]Physical[blank_end]
    1. APhysical
    2. BChemical
    3. CPhysical and Chemical
    4. DPhysical
    5. EChemical
    6. FPhysical and Chemical
    7. GPhysical
    8. HChemical
    9. IPhysical and chemical
    10. JPhysical
    11. KChemical
    12. Lphysical and chemical
    13. MPhysical
    14. Nchemical
    15. Ophysical and chemical
    16. PPhysical
    17. QChemical
    18. Rphysical and chemical
    19. SPhysical
    20. TChemical
    21. Uphysical and chemical
    22. VPhysical
    23. WChemical
    24. Xphysical and chemical
    25. YPhysical
    26. Zchemical
    27. AAphysical and chemical
  2. 2Which of the following is a physical change? Which is a chemical change?

    burning a piece of wood [blank_start]Chemical change[blank_end]
    dissolving copper sulfate in water to obtain a blue solution [blank_start]Physical change[blank_end]
    1. AChemical change
    2. BPhysical change
    3. CPhysical change
    4. DChemical change
  3. 3State if the following processes is endothermic or exothermic?
    1. Heating water from 20°C to 80°C. [blank_start]Endothermic[blank_end]
    2. Heating water from 20°C through to boiling continuously at 100°C. [blank_start]Endothermic[blank_end]
    3. The burning of a magnesium ribbon in air [blank_start]Endothermic[blank_end]
    4. The reaction that takes place when a spark is introduced to a mixture of H2 and O2 gas. [blank_start]Endothermic[blank_end]
    5. Any reaction or process that consumes heat energy. [blank_start]Endothermic[blank_end]
    6. The process of cooling liquid paradichlorobenzene until it solidifies. [blank_start]Endothermic[blank_end]
    7. The decomposition of water into H2 and O2 gas. [blank_start]Endothermic[blank_end]
    8. Any reaction or process that releases heat energy [blank_start]Endothermic[blank_end]
    9. Condensation of steam [blank_start]Endothermic[blank_end]
    10. Sublimation of iodine. [blank_start]Endothermic[blank_end]
    11. Vaporization of ethanol [blank_start]Endothermic[blank_end]
    1. AEndothermic
    2. BExothermic
    3. CEndothermic
    4. DExothermic
    5. EEndothermic
    6. FExothermic
    7. GEndothermic
    8. HExothermic
    9. IEndothermic
    10. JExothermic
    11. KEndothermic
    12. LExothermic
    13. MEndothermic
    14. NExothermic
    15. OEndothermic
    16. PExothermic
    17. QEndothermic
    18. RExothermic
    19. SEndothermic
    20. TExothermic
    21. UEndothermic
    22. VExothermic
  4. 4Is the following process an endothermic process or exothermic?
    Ammonium chloride dissolving in water which causes the temperature of the solution to drop [blank_start]Endothermic[blank_end]
    1. AEndothermic
    2. BExothermic
  5. 5In Chemical Reactions which of the following always happens?
    1. Aa. conservation of mass?
    2. Bc. conservation of the number of molecules?
    3. Cb. conservation of the number of atoms?
    4. Dd. conservation of the number of moles?
  6. 6How many molecules of nitrogen does one molecule of N2H4 give [blank_start]?[blank_end] (write only in numbers
    1. A1
  7. 7How many molecules of water does one molecule of N2H4 give [blank_start]....[blank_end] ? write only numbers
    1. A2
  8. 8How many moles of nitrogen does one mole of N2H4 give [blank_start]...[blank_end] (write only numbers as digits)
    1. A1
  9. 9How many moles of water does one mole of N2H4 give [blank_start]>[blank_end]
    1. A2
  10. 10How many grams are there in one mole of N2H4? [blank_start]....[blank_end] g
    1. A32

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Beschreibung
Chapter 4 Grade 10 SABIS chemistry Quiz Level L
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English
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