Boiling point

The video explains how gases behave at atmospheric pressure, highlighting that each pure substance has a specific temperature at which it transitions to a gas. It also discusses how pressure affects this process. Under normal conditions, water boils at 100°C, while gases in the atmosphere boil at much lower temperatures, around -190°C.

What is the boiling point of a substance at atmospheric pressure called?

• Melting point

• Freezing point

• Boiling point

• Condensation point

Which factor can affect the boiling point of a pure substance?

• Pressure

• Shape

• Volume

• Color

Which of the following statements is true about boiling points?

• Boiling points are higher at lower altitudes.

• Boiling points vary for different substances.

• Boiling points are not affected by pressure.

• Boiling points are the same for all substances.

At what temperature does water typically boil under normal conditions?

• 150°C

• 100°C

• 50°C

• 0°C

What is the approximate boiling point of gases in our atmosphere?

• 0°C

• -100°C

• -190°C

• -273°C