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When the sodium chloride (NaCl) and sucrose (C12H22O11) are added to the water, the(2 points)

Responses

sodium chloride and sucrose do not dissociate into ions
sodium chloride and sucrose do not dissociate into ions

sucrose dissociates into ions and the sodium chloride does not
sucrose dissociates into ions and the sodium chloride does not

sodium chloride and sucrose both dissociate into ions
sodium chloride and sucrose both dissociate into ions

sodium chloride dissociates into ions and the sucrose does not
sodium chloride dissociates into ions and the sucrose does not
Part B: "Micro" Tab
Micro" Tab Part B - Watch the video with the pHET demonstration, read the information below and review U4L5 pg. 2 :

"What is Conductivity?"

"Solutions are all around us. While ionic solutions of different strengths are used as conductors, covalent solutions, which contain covalent molecules, and covalent compounds are used as insulators.

Electricity is energy that comes from the movement of charged particles. In this diagram, the electrons in the metal wire move from the positive end of the battery to the negative end. Similarly, in a solution containing ionic compounds, the charged ions move when they're part of a circuit."

Read Unit 4 Lesson 5 page 2, paragraphs 3 and 4 to continue learning about this topic and answer the following questions, after reviewing the recording and reading the above passage from the lesson:

Question 2
Based on part A (above) and reviewing the U4L5 lesson, you can conclude that (click all that apply)(2 points)
Responses

sugar is a covalent compound, salt is an ionic compound
sugar is a covalent compound, salt is an ionic compound

sugar is a conductor of electricity and salt is a conductor of electricity
sugar is a conductor of electricity and salt is a conductor of electricity

salt is a covalent compound and sugar is a covalent compound
salt is a covalent compound and sugar is a covalent compound

a sugar molecule is made up on non metals and salt is made up on a metal and non metal

1 answer

Part A:

When sodium chloride (NaCl) and sucrose (C₁₂H₂₂O₁₁) are added to water:

  • The correct response is: sodium chloride dissociates into ions and the sucrose does not.

Explanation: Sodium chloride (an ionic compound) dissociates into Na⁺ and Cl⁻ ions in solution, allowing it to conduct electricity. In contrast, sucrose (a covalent compound) does not dissociate into ions in water, so it does not conduct electricity.

Part B:

Based on your readings and review:

The applicable conclusions are:

  1. Sugar is a covalent compound, salt is an ionic compound.
  2. A sugar molecule is made up of nonmetals and salt is made up of a metal and a nonmetal.

Not correct:

  • Sugar is a conductor of electricity and salt is a conductor of electricity. (Only salt is a conductor in solution due to its dissociation into ions.)
  • Salt is a covalent compound and sugar is a covalent compound. (This statement is inaccurate as salt is ionic, while sugar is covalent.)

Summary of Responses

  • Part A: Sodium chloride dissociates into ions and the sucrose does not.
  • Part B: Sugar is a covalent compound, salt is an ionic compound. A sugar molecule is made up of nonmetals and salt is made up of a metal and a nonmetal.