정답이 있는 간호학 입학 시험 대비 화학 학습지

무료 인쇄용 간호학 입학 시험 대비 화학 학습지: 쉬운 문제부터 시험 수준까지 8문제, 정답표 포함. 인쇄하거나 PDF로 저장하세요.

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1.쉬움

Which state of matter has neither a fixed shape nor a fixed volume?

  1. AGas
  2. BSolid
  3. CCrystal
  4. DLiquid
2.쉬움

What are the units of molarity?

  1. AGrams of solute per litre of solution (g/L)
  2. BMoles of solute per litre of solution (mol/L)
  3. CMoles of solute per kilogram of the solvent used
  4. DGrams of solute per 100 g of solution
3.쉬움

Which group contains the alkaline earth metals, such as magnesium and calcium?

  1. AGroup 17
  2. BGroup 2
  3. CGroup 1
  4. DGroup 18
4.보통

What is the conjugate base of nitric acid, HNO₃?

  1. ANO₂⁻
  2. BNO₃⁻
  3. CH₂NO₃⁺
  4. DHNO₂
5.보통

Why does the vapour pressure of a liquid increase as it is heated?

  1. AThe liquid's volume decreases and squeezes out vapour
  2. BMore molecules have enough energy to escape into the gas phase
  3. CThe molecules become heavier and press harder on the surface
  4. DThe attractions between the molecules become stronger
6.보통

When diluting a concentrated acid, which method is safe?

  1. AMix them in any order, as long as it is fast
  2. BAdd the water slowly to the acid
  3. CAdd the acid slowly to the water
  4. DAdd the water quickly to the acid
7.어려움

Why does a burn from steam at 100 °C usually cause more damage than one from liquid water at 100 °C?

  1. ASteam carries dissolved acid that damages the skin
  2. BSteam releases a large amount of extra energy as it condenses on the skin
  3. CLiquid water cannot pass any of its heat to the skin
  4. DSteam particles are hotter than water particles at the same reading
8.어려움

Making ammonia (N₂ + 3H₂ ⇌ 2NH₃) is exothermic. A low temperature would give a higher yield, yet factories use a moderately high temperature. Why?

  1. ALow temperatures would make the ammonia explode
  2. BHigher temperatures shift the equilibrium toward more ammonia
  3. CAt low temperatures the reaction is too slow to be useful
  4. DThe catalyst only works when the reaction is endothermic

정답표

  1. 1. A · Gas
  2. 2. B · Moles of solute per litre of solution (mol/L)
  3. 3. B · Group 2
  4. 4. B · NO₃⁻
  5. 5. B · More molecules have enough energy to escape into the gas phase
  6. 6. C · Add the acid slowly to the water
  7. 7. B · Steam releases a large amount of extra energy as it condenses on the skin
  8. 8. C · At low temperatures the reaction is too slow to be useful

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