Grade 7 Chemistry Academic Year: 2023-2024 Chapter 4 - Solutions

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Questions and Answers

What is the physical state of the solvent in tube 3?

  • Cannot be determined
  • Solid
  • Liquid (correct)
  • Gas

In the example of Brass, what is the solvent?

  • Copper (correct)
  • Carbon Dioxide
  • Zinc
  • Oxygen

What determines the physical state of a solution?

  • Temperature
  • Gas
  • Solvent (correct)
  • Solute

Which of the following is NOT a solid solution?

<p>Soft drinks (A)</p> Signup and view all the answers

What is the solvent in tube 6?

<p>Acetone (D)</p> Signup and view all the answers

Which tube contains a mixture of solid and gas?

<p>Tube 5 (C)</p> Signup and view all the answers

What is the key difference between dilute and concentrated solutions?

<p>The amount of solute present in the solution (C)</p> Signup and view all the answers

Which of the following factors influences the rate of dissolution of a solid solute in a liquid solvent?

<p>Temperature, surface area, and stirring (C)</p> Signup and view all the answers

What distinguishes unsaturated, saturated, and supersaturated solutions from each other?

<p>The amount of solute dissolved in the solvent (C)</p> Signup and view all the answers

What role do water, ethanol, and acetone play in the context of solutions?

<p>They are all solvents (C)</p> Signup and view all the answers

Why is a mixture of water and mud not considered a solution?

<p>It does not follow the definition of a solution as a homogeneous mixture (A)</p> Signup and view all the answers

Why is a mixture of water and blue ink considered a solution?

<p>The blue ink has dissolved completely in water (A)</p> Signup and view all the answers

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