Understanding Electrolytes

Which of the following substances is an example of an electrolyte?

• Distilled water

• Sand

• Lemon juice

• Olive oil

In the conductivity experiment, which solution was able to light up the bulb?

• Pure water

• Sugar water

• Salt water

• Oil

What happens to sodium chloride when it is dissolved in water?

• It remains unchanged

• It forms a precipitate

• It evaporates

• It dissociates into ions

Why does sugar water not conduct electricity?

• It contains too many ions

• Sugar does not dissociate into ions

• It has a high pH level

• It is too viscous

Which of the following is a non-electrolyte?

• Gatorade

• Pure water

• Vinegar

• Salt water

What is required for a solution to be electrolytic?

• Presence of free-floating ions

• High viscosity

• High temperature

• Low pH

What distinguishes a strong electrolyte from a weak one?

• The color of the solution

• The concentration of ions

• The pH level

• The temperature of the solution

Which of the following would likely be a strong electrolyte?

• Dilute acetic acid

• Concentrated sulfuric acid

• Distilled water

• Vegetable oil

What effect does increasing ion concentration have on the brightness of a light bulb in an electrolytic solution?

• Decreases brightness

• No effect

• Increases brightness

• Causes the bulb to flicker

Which of the following solutions would result in a dimly lit bulb?

• Concentrated salt solution

• Pure water

• Weak electrolyte solution

• Strong acid solution