Podcast
Questions and Answers
Why are crystalline solids considered as true solids?
Why are crystalline solids considered as true solids?
- because they behave as crystalline at a certain temperature.
- because that can be molded and blown into various shapes.
- because of their repeated pattern of arrangement. (correct)
- because of its sharp melting point that once it reaches this point it will immediately change into liquid form.
Why are the solid-state and molten state of ionic crystals considered poor electrical conductors?
Why are the solid-state and molten state of ionic crystals considered poor electrical conductors?
- because their particles are NOT held firmly thus there is no enough space for the ions to move around which make them non-conductors of electricity.
- because they have a definite heat of fusion that helps them to change their phase.
- because their particles are held firmly thus there is no enough space for the ions to move around which make them as non-conductors of electricity. (correct)
- because of delocalized electrons that can freely room across the entire metal.
What do plateaus in a heating and cooling curve of a substance imply?
What do plateaus in a heating and cooling curve of a substance imply?
- all the solid substance is completely melted
- a phase change occurs (correct)
- temperature is in a constant value
- kinetic energy is speeding
What does dynamic equilibrium mean?
What does dynamic equilibrium mean?
What is the definition of an electrolyte?
What is the definition of an electrolyte?
Which term refers to the boiling point of a solution minus the boiling point of the pure solvent?
Which term refers to the boiling point of a solution minus the boiling point of the pure solvent?
Which compound will cause the greatest increase in the boiling point when added to an aqueous solution?
Which compound will cause the greatest increase in the boiling point when added to an aqueous solution?
Which solution will show the smallest amount of freezing point depression?
Which solution will show the smallest amount of freezing point depression?
Which factor increases the rate of a chemical reaction?
Which factor increases the rate of a chemical reaction?
Which factor does NOT affect the rate of a chemical reaction?
Which factor does NOT affect the rate of a chemical reaction?
What is the molarity of a 20.0% phosphoric acid (H3PO4) solution with a density of 1.12 g/mL?
What is the molarity of a 20.0% phosphoric acid (H3PO4) solution with a density of 1.12 g/mL?
How many grams of Ag2CO3 are required to react completely with 28.5 mL of 1.00 M NaOH solution?
How many grams of Ag2CO3 are required to react completely with 28.5 mL of 1.00 M NaOH solution?
Which property differentiates electrolytes from nonelectrolytes?
Which property differentiates electrolytes from nonelectrolytes?
Which of the following is a nonelectrolyte?
Which of the following is a nonelectrolyte?
Which 0.1 M solution would have the lowest vapor pressure at 25°C?
Which 0.1 M solution would have the lowest vapor pressure at 25°C?
Which observation(s) reflect(s) colligative properties?
Which observation(s) reflect(s) colligative properties?
