EWS 9B Boiling vs Evaporation

Boiling takes place at ____ temperature.

• any
• a constant

Evaporation takes place at ____ temperature.

• any
• a constant

_____ is the change of state from liquid to vapour at ____ temperature. (MORE THAN ONE ANSWER)

• Evaporation, any
• Boiling, any
• Evaporation, a constant
• Boiling, a constant

Tags

NGSS.MS-PS1-4

During the evaporation of a liquid, thermal energy is _____ from the liquid, causing a ______

• absorbed, heating effect
• absorbed, cooling effect
• removed, heating effect
• removed, cooling effect

Tags

NGSS.MS-PS1-4

Perspiration helps to keep our bodies cool because when the water evaporates, it _____ energy from our skin to ____ bonds, cooling the skin.

• absorbs, strengthen
• absorbs, weaken
• removes, strengthen
• removes, weaken

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

We spread clothes to dry faster to ____ the exposed surface area so that more water molecules can ______ to change to gas, causing evaporation.

• decrease, lose heat and strengthen bonds
• decrease, gain heat and weaken bonds
• increase, lose heat and strengthen bonds
• increase, gain heat and weaken bonds

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following describes boiling?

• occurs at any temperature
• relatively slow
• takes place only at the surface
• temperature remains constant

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following describes evaporation?

• bubbles are formed
• temperature remains constant
• occurs at any temperature
• external energy source is needed

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following characteristics of evaporation does not apply to the boiling of liquids?

• Evaporation occurs over a wide range of temperature.
• Evaporation takes place at the surface of liquids.
• During evaporation, liquids are converted into vapour.
• During evaporation, intermolecular bonds between liquid particles are weakened.

Tags

NGSS.MS-PS1-4

The temperature of a liquid drops during evaporation because

• heat is conducted away to the environment.
• heat is radiated away to the environment.
• the molecules with more energy escape into the environment as vapour, causing the average kinetic energy of the liquid molecules to drop.
• of the temperature difference between the liquid and the environment.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5