What Is Concentration

Concentration is

• the amount of solute in the solvent

• the amount of solvent in the solute

• density

• particle size

Which solution is more concentrated?

Solution 1:

500 mL of water

100 g of salt

Solution 2:

500 mL of water

90 g of salt

• Solution 1

• Solution 2

• They have the same concentration

• I have no idea

Which solution is more concentrated?

Solution 1:

20 mL of water

5 g of salt

Solution 2:

20 mL of water

10 g of salt

• Not enough information to tell

• Solution 1

• Solution 2

• They are equally concentrated

In order to dilute a solution, you need to

• add more of the solid

• add more water

• find the mass

• find the volume

Which solution is more diluted?

Solution 1:

1000 mL of water

60g of salt

Solution 2:

500 mL of water

60 g of salt

• Not enough information to tell

• Solution 1

• Solution 2

• They are equally diluted

The EASIEST way to determine which Koolaid solution is the most concentrated is to...

• compare their mass

• compare their color

• evaporate each solution

Tags

NGSS.MS-PS1-2

In order to compare the concentration of two solutions on a balance, the two solutions must have equal volumes.

• true

• false

Both of these solutions have a volume of 30 mL. Which solution is more concentrated?

• orange solution

• green solution

• they are equally concentrated

Both solutions have equal volumes of 30 mL. Which solution is more diluted?

• Solution X

• Solution Y

The mass of 50 mL of honey is 70 g

The mass of 50 mL of water is 50 g

If you pour both into a graduated cylinder, which one will float to the top?

• Honey

• Water