RISE Science Grade 6 Practice Questions - RISE Science - Grade 6 Exam

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A glass of iced water sits on a kitchen table on a humid summer afternoon. After 15 minutes, liquid water droplets form on the outside surface of the glass. Where did this water come from?

Cold water seeped through microscopic pores in the glass walls. Ice cubes inside the glass melted and overflowed down the outer wall. Water vapor particles in the warm air collided with the cold glass, lost energy, and condensed into liquid. Hydrogen and oxygen gases chemically reacted on the glass surface to produce new water molecules.

Correct Answer:

Water vapor particles in the warm air collided with the cold glass, lost energy, and condensed into liquid.

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