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Understanding Scales and Weighing Methods

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Understanding Scales and Weighing Methods

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Questions and Answers

What does a scale measure?

Volume of an object

Density of an object

Weight of an object (correct)

Mass of an object

What is often confused with the weight of an object?

Length

Volume

Density

Mass (correct)

Which law describes the proportionality between mechanical stress and deformation?

Einstein's Theory of Relativity

Boyle's Law

Newton's Law

Hooke's Law (correct)

What type of scales use the elastic deformation of a spring as a measure of weight?

Spring scales Signup and view all the answers

What is the main application of analytical balances?

Quantitative chemical analysis Signup and view all the answers

How do weighing balances function?

By balancing unknown weights with known weights Signup and view all the answers

What is the common accuracy (readability) of analytical balances in the range up to 220 g?

0.01 mg Signup and view all the answers

Which type of analytical balance is suitable for weighing the smallest amounts?

Ultra Micro Balances Signup and view all the answers

How many digits are typically displayed as readout on Ultra-micro balances?

7 digits Signup and view all the answers

Why are precision balances sometimes referred to as 'top-loading balances'?

Because samples are loaded directly onto the weighing pan Signup and view all the answers

What distinguishes human weighing scales used in hospitals from analytical and precision balances?

They are calibrated for medical use Signup and view all the answers