Gr5 - Solubility

What does it mean if a substance is soluble?

• It floats on water
• It sinks in water
• It dissolves in water
• It reacts with water

Which of the following is most likely to be soluble in water?

• Sand
• Oil
• Sugar
• Flour

When a substance disappears completely in water, it is said to have:

• Reacted
• Dissolved
• Evaporated
• Mixed

What does water look like when salt is added and dissolves?

• Cloudy
• Foamy
• Clear
• Muddy

If a substance does not dissolve and settles at the bottom, it is:

• Insoluble
• Transparent
• Mixture
• Physical

Which of these substances is insoluble in water?

• Salt
• Sugar
• Sand
• Baking soda

A student says corn flour is soluble because it makes water cloudy. What’s wrong?

• It’s not mixed
• It evaporates
• Cloudiness doesn’t mean it dissolved
• It changed chemically

Which statement is true about solubility?

• It changes the substance chemically
• It is a physical property
• It only happens in cold water
• All solids are soluble

Solubility helps scientists because it:

• Makes water colder
• Helps identify materials
• Changes color
• Shows how much mass a substance has

What happens to mass when a soluble substance dissolves in water?

• It increases
• It disappears
• It stays the same
• It becomes lighter