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 pH of pure water at 25 °C?

  1. A0
  2. B14
  3. C1
  4. D7
2.Easy

What is the name for the attraction of water molecules to each other?

  1. ACohesion
  2. BAdhesion
  3. COsmosis
  4. DDiffusion
3.Easy

What is a cation?

  1. AA negatively charged ion
  2. BA neutral atom
  3. CA molecule with no charge
  4. DA positively charged ion
4.Medium

Why does keeping food in a refrigerator slow down spoilage?

  1. ACold air contains no oxygen
  2. BCold temperatures add preservatives to the food
  3. CLower temperatures raise the activation energy of every reaction
  4. DLower temperatures slow down chemical and microbial reactions
5.Medium

In a closed container, 10 g of substance A reacts completely with 5 g of substance B. What is the total mass of the products?

  1. A5 g
  2. B15 g
  3. C10 g
  4. D50 g
6.Medium

Magnesium forms Mg²⁺ ions and oxygen forms O²⁻ ions. What is the formula of magnesium oxide?

  1. AMgO
  2. BMg₂O
  3. CMgO₂
  4. DMg₂O₂
7.Hard

Na⁺, Mg²⁺, F⁻ and O²⁻ all have 10 electrons. Which ion is the largest?

  1. AF⁻
  2. BNa⁺
  3. CO²⁻
  4. DMg²⁺
8.Hard

Chlorine has two common isotopes, chlorine-35 (about 75%) and chlorine-37 (about 25%). What is its average atomic mass?

  1. AAbout 35.5
  2. BAbout 36.5
  3. CExactly 36
  4. DExactly 35

Answer key

  1. 1. D · 7
  2. 2. A · Cohesion
  3. 3. D · A positively charged ion
  4. 4. D · Lower temperatures slow down chemical and microbial reactions
  5. 5. B · 15 g
  6. 6. A · MgO
  7. 7. C · O²⁻
  8. 8. A · About 35.5

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