Required practical - Investigating density (AQA GCSE Physics Combined Science): Quizzes

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Required practical - Investigating density
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What is the formula for calculating density?

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

Which piece of equipment is used to measure the mass of an object?

Electronic balance

How do you find the volume of an irregular solid object?

Use displacement can and collect overflow

How do you find the volume of a regular solid object?

Measure dimensions and calculate volume

What should you do before measuring the mass of a liquid in a measuring cylinder?

Set the balance reading to zero

What is parallax error when reading a measuring cylinder?

Reading from above or below the meniscus

How do you convert density from g/cm3\text{g/cm}^3 to kg/m3\text{kg/m}^3?

Multiply by 1000

How do you convert density from kg/m3\text{kg/m}^3 to g/cm3\text{g/cm}^3?

Divide by 1000

A liquid has a mass of 454 g and volume of 256 cm³. What is its density?

1.77 g/cm31.77 \text{ g/cm}^3

Why does the displacement method work for finding volume of irregular solids?

Object displaces water equal to its volume

Why do small errors in mass or volume lead to big errors in density?

Errors get magnified when dividing values

Why should mercury not be used in school density experiments?

It is dangerous

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