Ciencias Grados 5–6

G6-W5-L2

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Which statement best describes the difference between evaporation and boiling?

A Evaporation produces a gas, while boiling produces a solid.

B Evaporation occurs only at the surface of a liquid, while boiling occurs throughout the liquid.

C Evaporation requires a higher temperature than boiling.

D Evaporation occurs only at the bottom of a liquid, while boiling occurs at the surface.

When water vapor condenses into liquid water, what happens to the energy of the water particles?

A The particles lose energy to the surroundings.

B The particles neither gain nor lose energy.

C The particles gain energy from the surroundings.

D The particles gain energy and then lose it immediately.

A student notices that a puddle of water disappears after a sunny day, but the water in a pot boils when heated on a stove. Which process explains why the puddle disappears without boiling?

A Condensation

B Evaporation

C Melting

D Sublimation

In a particle model, which diagram best represents the arrangement of particles in a gas compared to a liquid?

A Particles are close together but randomly arranged.

B Particles are far apart and fixed in position.

C Particles are far apart and move randomly at high speeds.

D Particles are close together and arranged in a regular pattern.

During an investigation, a student observes that when a liquid is heated, it eventually boils. Which statement best explains why boiling requires a continuous supply of energy?

A Energy is needed to break the bonds between particles so they can escape as gas.

B Energy is needed to make the particles move slower.

C Energy is needed to change the liquid into a solid.

D Energy is needed to cool the liquid down.

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