8C1 Properties of Materials

In a chemistry lab, Kai is conducting an experiment to determine the properties of a solution. He defines a solution as

• A mixture of oil and water

• A mixture where a substance is dissolved

• A mixture that contains two solids

• None of the above

A solution is made up of two components. The first is the solute. What is the solute?

• The substance that dissolves

• The substance that does the dissolving

• The liquid substance

• None of the above

Which of the following is true about solutions?

• The particles of the solute become very small

• Evaporation can be used to separate solutions

• The substance spreads out evenly

• All of these options are true

The ability of a solute to be dissolved is called its

• nature

• mixture

• solubility

• solvent

Select ALL the correct statement from the options below

• The hotter the water, the slower the salt will dissolve

• The hotter the water, the faster the salt will dissolve

• The smaller the size of the salt particles, the faster they will dissolve

• The larger the salt particles, the faster they will dissolve

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

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 solution is saturated:

• No additional material will dissolve in it
• You need to stir it more 
• Two materials have combined to create a clear liquid
• Crystals form 

What does it mean to dilute a solution?

• lower the concentration of solute per solvent
• increase the concentration of solute per solvent