Question

b) Explain the colour change observed in litmus when a magnesium

ribbon is burnt and its oxide is dissolved in water and tested

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Answer 1

Answer:

Magnesium oxide changes the colour of red litmus paper to blue. ... The formation of magnesium oxide is a direct combination reaction of two elements: magnesium and oxygen. Magnesium oxide is entirely different from the reactants magnesium and oxygen. So, this reaction is a chemical change.

Explanation:

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Answer 2

Answer:

there are two types of litmus blue and red

Explanation: