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Which test would you use to identify the difference between an aldehyde and a ketone? Explain your observations.

Tollens Reagent "silver mirror test". When added to the aldehyde, a silver mirror appears. When added to the ketone, nothing happens.This is because the Tollens Reagent oxidises the aldehyde, while...
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Answered by Rachel J. • Chemistry tutor
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Describe and explain an an anthropogenic cause of climate change?

Climate change is a long-term shift in the earth's climate. This can be due to various natural causes but has recently been affected by humans. An example of this is the enhanced greenhouse gas effect. Since...
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Answered by Sarah D. • Geography tutor
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How do I expand a factorised expression?

Take example (x+3)(x-4) We use FOIL - first, outer, inner, last We multiply each part by the other part. First -> x times x = x 2 . Outer -> x times -4 = -4x (remember the minus infront of the 4), Inne...
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Answered by Sarah K. • Maths tutor
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What is economic growth?

Economic growth is an increase in the production of good and services in an economy over time.
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Answered by Funsho A. • Economics tutor
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I can differentiate exponentials (e^x), but how can I differentiate ln(x)?

[Differentiate y = ln(x)] This is an example of many situations in maths where you need to solve something that is similar to what you can solve, but not in its current form. A good idea, then, is to see wha...
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Answered by Adam L. • Maths tutor
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