Understanding Electrolytes and Mixtures

What was the purpose of the experiment with the four glasses?

• To identify the color of the liquids

• To determine which liquids can conduct electricity

• To measure the temperature of the liquids

• To find out the pH level of the liquids

What is a characteristic of homogeneous mixtures?

• They have a visible boundary between substances

• They are not uniform at a molecular level

• They are also known as solutions

• They cannot dissolve in water

What allows solute particles to dissolve uniformly in water?

• The color of the solute

• The size of the solute particles

• Water's magnet-like properties

• Water's temperature

Why does salt water conduct electricity?

• Because salt particles break into charged particles

• Because it is a non-electrolyte

• Because salt particles remain whole

• Because it forms a heterogeneous mixture

What happens when sugar is dissolved in water?

• It becomes a strong electrolyte

• It forms charged particles

• It does not dissolve at all

• It separates but does not form charged particles

What type of mixture is formed when sand is added to water?

• An electrolyte solution

• A heterogeneous mixture

• A homogeneous mixture

• A solution

What is the characteristic of a weak electrolyte?

• It forms a heterogeneous mixture

• It completely dissociates into charged particles

• It partially breaks into charged particles

• It does not conduct electricity at all

Which liquid in the experiment was identified as a strong electrolyte?

• Salt water

• Chalk in water

• Vinegar

• Pure water

What is the main reason pure water is not an electrolyte?

• It contains sugar

• It is a heterogeneous mixture

• It is too cold

• It has no charged particles

What conclusion can be drawn about vinegar in the experiment?

• It forms a heterogeneous mixture

• It is a weak electrolyte

• It does not conduct electricity

• It is a strong electrolyte