Робочий аркуш «Хімія для вступних іспитів на медсестринство» з відповідями

Безкоштовний робочий аркуш для друку «Хімія для вступних іспитів на медсестринство»: 8 задач від легких до рівня іспиту, з ключем відповідей. Роздрукуйте його або збережіть як PDF.

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1.Легка

What is a precipitate?

  1. AA substance that speeds up a reaction
  2. BAn insoluble solid that forms when two solutions react
  3. CA gas that bubbles out when two solutions are mixed
  4. DA liquid that forms when a solid melts
2.Легка

What is a dilute solution?

  1. AOne with a small amount of solute in a lot of solvent
  2. BOne with a large amount of solute in a little solvent
  3. COne in which the solute has reacted with the solvent
  4. DOne with no solvent at all
3.Легка

What are the usual units of molar mass?

  1. Ag/mol
  2. Bmol/L
  3. Cmol/g
  4. Dg/L
4.Середня

Why do group 1 metals such as sodium react so easily?

  1. AThey have one outer electron that is easily lost
  2. BThey easily gain one extra electron
  3. CTheir nuclei contain no neutrons
  4. DThey have a full outer shell of electrons
5.Середня

Which assumption is made about an ideal gas?

  1. AIts particles lose energy in every collision
  2. BIts particles stay still at room temperature
  3. CIts particles have no attraction to each other
  4. DIts particles are large, closely packed and strongly attracted
6.Середня

Which reacts more vigorously with water, potassium or sodium?

  1. ASodium, because it has fewer electron shells to shield its electron
  2. BSodium, because its outer electron is farther from the nucleus
  3. CPotassium, because its outer electron is farther from the nucleus
  4. DThey react equally, because both are in group 1
7.Складна

Frying an egg turns the clear egg white solid and white. What happens to the proteins?

  1. AThey are hydrolysed, so the peptide bonds break into separate amino acids
  2. BThey are burned to carbon dioxide and water
  3. CThey are converted into fats
  4. DThey are denatured: their shape changes, but the peptide bonds stay intact
8.Складна

A sealed bag of crisps (potato chips) packed at sea level looks puffed up when it is carried to a high mountain. Why?

  1. AMore gas is produced by the crisps at altitude
  2. BThe bag becomes thinner and weaker at altitude
  3. CThe gas inside the bag is heated strongly by the mountain sunlight
  4. DThe outside air pressure is lower, so the gas inside expands

Ключ відповідей

  1. 1. B · An insoluble solid that forms when two solutions react
  2. 2. A · One with a small amount of solute in a lot of solvent
  3. 3. A · g/mol
  4. 4. A · They have one outer electron that is easily lost
  5. 5. C · Its particles have no attraction to each other
  6. 6. C · Potassium, because its outer electron is farther from the nucleus
  7. 7. D · They are denatured: their shape changes, but the peptide bonds stay intact
  8. 8. D · The outside air pressure is lower, so the gas inside expands

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