Chemistry for nursing entrance exams worksheet with answers

Free printable Chemistry for nursing entrance exams worksheet: 8 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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1.Easy

What is the molar mass of oxygen gas, O₂ (O = 16 g/mol)?

  1. A48 g/mol
  2. B16 g/mol
  3. C8 g/mol
  4. D32 g/mol
2.Easy

Why is water often called the universal solvent?

  1. AIt has no partial charges anywhere in its molecule, so it mixes with everything
  2. BIt dissolves more substances than other common liquids
  3. CIt is the only liquid found on Earth
  4. DIt dissolves every substance completely
3.Easy

Sodium and potassium belong to which group?

  1. AThe alkaline earth metals (group 2)
  2. BThe alkali metals (group 1)
  3. CThe halogens (group 17)
  4. DThe noble gases (group 18)
4.Medium

When mercury(II) oxide is heated, it reacts as 2HgO → 2Hg + O₂. What type of reaction is this?

  1. ASingle replacement
  2. BDecomposition
  3. CCombustion
  4. DSynthesis
5.Medium

Which type of radiation can be stopped by a sheet of paper?

  1. AAlpha particles
  2. BGamma rays
  3. CX-rays
  4. DBeta particles (fast electrons)
6.Medium

What is 380 mmHg in atmospheres?

  1. A380 atm
  2. B0.38 atm
  3. C2 atm
  4. D0.5 atm
7.Hard

A solution of acetic acid conducts electricity only weakly, while hydrochloric acid of the same concentration conducts strongly. Why?

  1. AAcetic acid does not dissolve in water at all
  2. BHydrochloric acid contains metal atoms
  3. CAcetic acid forms more ions than hydrochloric acid does
  4. DAcetic acid only partly ionises, so it forms fewer ions
8.Hard

CO₂ in blood forms carbonic acid: CO₂ + H₂O ⇌ H₂CO₃ ⇌ H⁺ + HCO₃⁻. An anxious patient hyperventilates and breathes off extra CO₂. What happens to blood pH?

  1. AIt falls, because less CO₂ means more H⁺ ions
  2. BIt rises, because less CO₂ means fewer H⁺ ions
  3. CIt stays exactly 7.40, because CO₂ does not affect pH
  4. DIt falls, because oxygen is an acid

Answer key

  1. 1. D · 32 g/mol
  2. 2. B · It dissolves more substances than other common liquids
  3. 3. B · The alkali metals (group 1)
  4. 4. B · Decomposition
  5. 5. A · Alpha particles
  6. 6. D · 0.5 atm
  7. 7. D · Acetic acid only partly ionises, so it forms fewer ions
  8. 8. B · It rises, because less CO₂ means fewer H⁺ ions

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