DISSOLVING MATTER

What is an example of a soluble substance?

• Salt in oil

• Sugar in water

• Sand in water

• Oil in vinegar

If you have large, medium, and small sugar particles, which will dissolve the fastest in water?

• Large sugar particles

• Medium sugar particles

• Small sugar particles

• All dissolve at the same rate

What is a solution?

• A mixture formed when a substance (solute) dissolves in another substance (solvent).

• A solid that forms when two liquids are mixed together.

• A gas that is released when a liquid evaporates.

• A type of chemical reaction that produces heat.

What is an example of an insoluble substance in water?

• Salt

• Sugar

• Sand

• Baking Soda

What happens to the particles of a solute when it dissolves in a solvent?

• The particles break apart and spread out evenly in the solvent.

• The particles remain intact and settle at the bottom.

• The particles form larger clumps that float on the surface.

• The particles change color and become visible in the solvent.

Substances that do not dissolve in water are called ...................

• soluble

• insoluble

• dissolvable

• mixable

When is the best time to add sugar to tea for it to dissolve properly?

• After the tea has cooled to room temperature.

• Before the tea cools to room temperature.

• While the tea is boiling hot.

• Once the tea has been poured into a cup.

What happens to sugar when it is added to hot water?

• It dissolves faster than in cold water.

• It forms crystals immediately.

• It sinks to the bottom without dissolving.

• It changes color to brown.

What is the role of a solvent in a solution?

• The solvent is the substance that dissolves the solute.

• The solvent is the substance that is dissolved by the solute.

• The solvent is the solid component of the solution.

• The solvent is the gas that forms bubbles in the solution.

Can a substance be both soluble and insoluble?

• No, a substance can only be one or the other.

• Yes, depending on the solvent and conditions.

• Only in solid form.

• Only in liquid form.