Calculating Mass of Substances (AQA GCSE Chemistry Combined Science): Quizzes

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Concentration of a solution
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What does concentration measure in a solution?

How much solute in a fixed volume

What is a solute?

The substance that dissolves

What is a solvent?

The liquid that does the dissolving

What are the units for concentration?

g/dm³

How many cm³ are equal to 1 dm³?

1000 cm³

What is the formula for concentration?

massvolume\frac{\text{mass}}{\text{volume}}

How do you convert cm³ to dm³?

Divide by 1000

If 75g dissolves in 3 dm³, what is the concentration in g/dm³?

25 g/dm³

What is 250 cm³ when converted to dm³?

0.25 dm³

If 20g dissolves in 250 cm³, what is the concentration in g/dm³?

80 g/dm³

What formula finds mass when you know concentration and volume?

mass=conc×vol\text{mass} = \text{conc} \times \text{vol}

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Measurement, Mass & Equations

Calculating Mass of Substances

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