titik leleh dan titik didih

What is the boiling point of water in degrees Celsius?

• 100

• 90

• 120

• 75

Define melting point.

• The melting point is the temperature at which a solid becomes a plasma.

• The melting point is the temperature at which a gas condenses into a liquid.

• The melting point is the temperature at which a solid turns into a liquid.

• The melting point is the temperature at which a liquid evaporates into a gas.

What happens to a substance at its boiling point?

• The substance freezes into a solid.

• The substance evaporates without changing state.

• The substance remains a liquid indefinitely.

• The substance changes from liquid to gas.

At what temperature does ice melt?

• 10 degrees Celsius (50 degrees Fahrenheit)

• -10 degrees Celsius (14 degrees Fahrenheit)

• -5 degrees Celsius (23 degrees Fahrenheit)

• 0 degrees Celsius (32 degrees Fahrenheit)

Explain the difference between melting and boiling.

• Melting is the transition from gas to liquid; boiling is the transition from solid to gas.

• Melting is the transition from solid to liquid; boiling is the transition from liquid to gas.

• Melting occurs at a constant temperature; boiling occurs at varying temperatures depending on pressure.

• Melting involves the absorption of heat; boiling involves the release of heat.

What is the boiling point of most substances compared to their melting point?

• The boiling point is always lower than the melting point.

• The boiling point is generally higher than the melting point for most substances.

• The boiling point and melting point are the same for all substances.

• The boiling point is irrelevant to the melting point.

How does pressure affect the boiling point of a liquid?

• Higher pressure leads to faster boiling of a liquid.

• Pressure increases the boiling point of a liquid.

• Pressure decreases the boiling point of a liquid.

• Pressure has no effect on the boiling point of a liquid.

What is the melting point of gold?

• 950 degrees Celsius

• 800 degrees Celsius

• 1064 degrees Celsius

• 1200 degrees Celsius

Why do different substances have different melting and boiling points?

• All substances have the same melting and boiling points.

• Melting and boiling points are determined solely by color.

• Only metals have distinct melting and boiling points.

• Different substances have different melting and boiling points due to variations in molecular structure and the strength of intermolecular forces.

How can you determine the boiling point of a liquid experimentally?

• By measuring the liquid's density at room temperature.

• By adding salt to the liquid and noting the temperature change.

• The boiling point of a liquid can be determined by heating it and observing the temperature at which it boils.

• By observing the color change of the liquid when heated.