Dissolving- Does it dissolve and what factors in?

When a material can dissolve in another material, it is:

• soluble

• insoluble

How do you test to see if something is soluble?

• put it in the microwave

• take it outside

• shake it

• put the substance in water

What occurs when a solid substance dissolves in a liquid?

• It sinks to the bottom.

• It floats on top.

• It breaks down and becomes part of the liquid substance.

Tags

NGSS.MS-PS1-2

What happens when a insoluble substance is mixed with water?

• It needs to be shaken up and then it will dissolve in the water.

• It will remain solid and not dissolve.

• It becomes clear.

Motor oil makes a layer on top of water when mixed together, this means it is:

• soluble in water

• insoluble in water

If substances float or sink in water, they are both:

• soluble

• insoluble

Of the following, which one is not soluble:

• sugar

• salt

• motor oil

• food coloring

If I put rocks into water and the water turns cloudy, are the rocks soluble?

• yes

• no

Tags

NGSS.MS-PS1-2

How does the temperature of water affect the speed of dissolving?

• Cold water slows down dissolving.

• Cold water speeds up dissolving.

• Hot water slows down dissolving.

• Water temperature does not affect rate of dissolving.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A large cube of sugar will dissolve faster than the same amount of regular sugar.

• True

• False