Ch.6.3

Question 1

We can use the ________________ ________________ to explain what happens to ________________ when it ________________ in ________________ to form a sugar solution.

Answer 1

particle theory, sugar, dissolves, water

Question 2

From the particle theory, sugar is made up of ________________ ________________. Also, water is made up of ________________ ________________.

Answer 2

sugar particles, water particles

Question 3

When sugar dissolves in water, the ________________ ________________ ________________ and ________________ with the ________________ ________________. The sugar particles are ________________ ________________ ________ _______ ________________ and therefore ________________ _________ __________________. However, they are ________________ ________________.

Answer 3

sugar particles, separate, mix, water particles, seems to disappear, still there

Question 4

How can we know the sugar is still there after it has dissolves in water?

Answer 4

This can be easily detected from the sweet taste of the solution formed.

Question 5

Why do sugar particles and water particles become evenly spread out eventually?

Answer 5

It is because they are always moving.

Question 6

When a solid dissolves in water, ________________________________________________________________________________________________________________________.

Answer 6

the particles of the solid separate and mix with the water particles

Question 7

Based on the particle theory, there are ________________ between particles. When sugar ________________ in water, the sugar particles ________________. The ________________ water particles ________________ ____________ __________ ________________ between the ________________ sugar particles. Therefore, the ________________ of the solution is ________________ ________________ than the ________________ ________________ of sugar and water.

Answer 7

spaces, dissolves, separate, smaller, fit into the spaces, bigger, volume, slightly less, total volume

Question 8

Unlike volume, ________________ remains ________________ in dissolving. Although the sugar particles separate, they are _____________ ______ _______ ________________. The ________________ ________________ of ________________ ________________ and ________________ ________________ remains the ________________. Therefore, the ________________ of the sugar solution is ________________ to the ________________ ________________ of the sugar and the water ________________ ________________.
In other words, ________________ is ________________ in dissolving.

Answer 8

mass, unchanged, still in the water, total number of sugar particles, water particles, same, mass, equal, total mass, before dissolving
mass, conserved

Question 9

In dissolving, volume ________________ while mass ________________ ________________.

Answer 9

changes, remains unchanged