# Lesson 21. Calculating concentration

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Slide 1: Tekstslide
ChemSecondary Education

In deze les zitten 29 slides, met interactieve quizzen en tekstslides.

## Onderdelen in deze les

#### Slide 1 -Tekstslide

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#### Slide 6 -Tekstslide

Enquiry question: Which two beakers contain more concentrated substances?
A and B
A and C
A and D
B and C
B and D
C and D

#### Slide 8 -Tekstslide

ConclusionWhich two beakers contain more concentrated substances?

#### Slide 10 -Tekstslide

______ a solid substance that dissolves in a liquid.
A
Solute
B
Solvent
C
Solution
D
Opaque

#### Slide 11 -Quizvraag

_____ is the liquid that dissolves the solid substance.
A
Solute
B
Solvent
C
Solution
D
Opaque

#### Slide 12 -Quizvraag

Most chemical reactions occur between solutes which are dissolved in solvents. Which of the following is NOT an example of a solvent?
A
silver nitrate
B
oil
C
water
D
ethanol

#### Slide 13 -Quizvraag

______ refers to the amount of solute there is in a specific volume of the solvent.
A
Solubility
B
Concentration
C
Insoluble
D
Saturation

#### Slide 14 -Quizvraag

The greater the amount of solute in a given volume, the _________ the concentration.
A
lesser
B
greater
C
more saturated
D
less saturated

#### Slide 15 -Quizvraag

Which of the following units can be used to express the amount of solute?
A
grams
B
moles
C
both A and B
D
liters

#### Slide 16 -Quizvraag

Which of the following units can be used to express the concentration of a solution in 1 L of solvent?
A
g / dm^3
B
moles / dm^3
C
moles / mL
D
both A and B

#### Slide 20 -Tekstslide

• m = 10g
• V = 2 dm3

• C =  ?
• C = m / V
• C = 10g / 2dm3

• C = 5 g / dm3

• The resulting concentration of  the NaOH solution is 5 g / dm3

#### Slide 26 -Tekstslide

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#### Slide 28 -Tekstslide

• Tuesday - Lesson 22  | Empirical and Molecular Formula
Up next!