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 an element?

  1. AA physical mixture of different substances
  2. BA substance made of only one kind of atom
  3. CA substance of two or more elements chemically bonded together
  4. DA particle with an electric charge
2.Easy

What are the building blocks of carbohydrates such as starch?

  1. ANucleotides
  2. BAmino acids
  3. CMonosaccharides (simple sugars) such as glucose
  4. DFatty acids joined to a glycerol molecule
3.Easy

What is the chemical formula of carbon dioxide?

  1. ACO₂
  2. BC₂O
  3. CCO
  4. DCO₃
4.Medium

Nitric acid (HNO₃) reacts with potassium hydroxide (KOH). Which salt forms?

  1. ANitrogen hydroxide, NOH
  2. BPotassium nitrate, KNO₃
  3. CPotassium hydride, KH
  4. DPotassium nitrite, KNO₂
5.Medium

Which substance is a non-electrolyte when dissolved in water?

  1. AGlucose
  2. BSodium chloride
  3. CHydrochloric acid
  4. DPotassium chloride
6.Medium

In 2KClO₃ → 2KCl + 3O₂, how many moles of O₂ form from 4 mol of KClO₃?

  1. A8 mol
  2. B3 mol
  3. C4 mol
  4. D6 mol
7.Hard

Ethanol (CH₃CH₂OH) and dimethyl ether (CH₃OCH₃) have the same formula, C₂H₆O, but ethanol boils at a much higher temperature. Why?

  1. AEthanol molecules are heavier than dimethyl ether molecules
  2. BEthanol has more carbon atoms
  3. CDimethyl ether is ionic and ethanol is covalent
  4. DEthanol has an O–H group, so its molecules form hydrogen bonds with each other
8.Hard

Why does atomic radius decrease from left to right across a period?

  1. AEach element adds a new electron shell
  2. BThe atoms lose electrons across the period
  3. CMore protons pull the electrons of the same outer shell closer
  4. DNeutrons push the electrons outward less strongly

Answer key

  1. 1. B · A substance made of only one kind of atom
  2. 2. C · Monosaccharides (simple sugars) such as glucose
  3. 3. A · CO₂
  4. 4. B · Potassium nitrate, KNO₃
  5. 5. A · Glucose
  6. 6. D · 6 mol
  7. 7. D · Ethanol has an O–H group, so its molecules form hydrogen bonds with each other
  8. 8. C · More protons pull the electrons of the same outer shell closer

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