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Name a metal that can be cut with a knife as shown in the photograph - Junior Cycle Science - Question e - 2013

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Name a metal that can be cut with a knife as shown in the photograph. Name ______________________ What happens if a piece of this metal is dropped into water? Wha... show full transcript

Worked Solution & Example Answer:Name a metal that can be cut with a knife as shown in the photograph - Junior Cycle Science - Question e - 2013

Step 1

Name a metal that can be cut with a knife as shown in the photograph.

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Answer

A suitable answer would be an alkali metal such as lithium, sodium, or potassium. For example, sodium is a commonly used metal that can be easily cut with a knife.

Step 2

What happens if a piece of this metal is dropped into water?

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Answer

When a piece of sodium is dropped into water, it reacts vigorously, fizzing and releasing hydrogen gas. This reaction can make the water alkaline, and if there is a sufficient amount of sodium, it may even catch fire or cause an explosion due to the hydrogen gas igniting.

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