Changes & Separation Vocabulary

Question 1

Which sentence uses the words soluble and insoluble correctly when talking about water?

Accepted Answer

Sugar is soluble in water, but sand is insoluble in water.

Answer

Sugar is insoluble in water, but sand is soluble in water.

Answer

Oil is soluble in water, and plastic is insoluble in water.

Answer

All materials are soluble in water.

Question 2

You add a sugar cube to a cup of hot tea and you also leave a stick of butter on a warm skillet. Which sentence correctly describes what happens to the sugar and the butter?

Accepted Answer

The sugar cube disappears because it dissolves in the tea, and the butter turns into a liquid because it melts from the heat.

Answer

The sugar cube disappears because it melts into a liquid, and the butter turns into a liquid because it dissolves in the heat.

Answer

Both the sugar cube and the butter turn into liquids because they both melt when they get warm.

Answer

Both the sugar cube and the butter stay solid because they only change shape, not state.

Question 3

You put an ice cube into a glass of water. Which statement correctly describes what is happening?

Accepted Answer

The ice cube melts, turning from solid ice into liquid water.

Answer

The ice cube dissolves, mixing with the water and disappearing.

Answer

The ice cube evaporates, changing directly into water vapor.

Answer

The ice cube condenses, turning from water vapor into solid ice.

Try three questions

Which sentence uses the words soluble and insoluble correctly when talking about water?

You add a sugar cube to a cup of hot tea and you also leave a stick of butter on a warm skillet. Which sentence correctly describes what happens to the sugar and the butter?

You put an ice cube into a glass of water. Which statement correctly describes what is happening?

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