DISSOLVING

Dissolving is an interaction between:

• the conservation of matter and time

• two (or more) substances: a solute and solvent

• solids and liquids

• temperature of a solid and the air

Anna filled a ​cup with hot tea. Then she added a sugar cube. ​Which of these will help to make the sugar cube dissolve more quickly? 

• stirring the hot tea
• adding more sugar cubes
• adding ice to the tea
• pouring more tea into the cup

Ernesto and Amanda fill two cups with water. They use hot water in one cup and cold water in the other cup. Next, they will stir a spoon of salt into each cup.     

In which cup will the salt dissolve more slowly? 

• The salt will not dissolve in either cup
• The salt dissolves more slowly in the hot water
• The salt dissolves more slowly in the cold water
• The salt dissolves at the same speed in both cups

What is a solvent?

• The substance that does the dissolving in a solution.
• The substance that is being dissolved in a solution.
• The mixing of different substances.
• The process in which neutral molecules lose or gain electrons

Look at the diagram. In this diagram, the red dots represent

• the solute
• the solvent
• the solution

Look at the diagram. In this diagram, the blue area represents

• the solute
• the solvent
• the solution

when a solvent can no longer hold any more solute

• saturation

• dilute

• dissolve

__________ are made up of solutes and solvents.

• Solutions
• Suspension
• Colloid
• mixtures

When you dissolve sugar cubes in tea, the sugar cube is the __________.

• solute

• solvent

When you dissolve sugar cubes in tea, the tea is the ____________.

• solvent

• solute