Dissolving

Which of these substances can be dissolved?

• salt

• sand

• flour

The salt is called the

• solute

• solvent

The water in a solution is called the

• solvent

• solute

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

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

Tags

NGSS.MS-PS1-4

What is a substance that is dissolved in another substance? 

• solution
• solute
• solvent
• compound

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

The process of evenly mixing one substance into another forming a solution is ................... process

• concentration

• heating

• dissolving

• condensation