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What is are elastic and inelastic collisions?

A collision is elastic when the total amount of kinetic energy in the system is conserved, there is no loss in kinetic energy. A collision is inelastic when the total amount of kinetic energy in the system i...
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Answered by Adam R. • Physics tutor
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Explain how a covalent bond holds two atoms together.

The electrostatic forces of attraction between the shared pair of bonded electrons and the positively charged nuclei hold the atoms together.
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Answered by Adam R. • Chemistry tutor
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Find the coordinates and the point of intersection between the lines 8x + 7y = 11 and y = 5x + 2

Substitute y = 5x + 2 into 8x + 7y = 11 to get, 8x + 7(5x + 2) = 11This simplifies down to 8x + 35x + 14 = 11And further simplifies to 43x = -3 giving the solution x = -3/43Substituting the x solution back i...
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Answered by Adam R. • Maths tutor
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Explain the process of phagocytosis

Phagocytosis is a non-specific cellular defence mechanism by the body which is initiated when a pathogen invades the body and has antigens which are detected as antigenic or foreign – note that antigens are ...
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Answered by Sam R. • Biology tutor
5266 Views

Write an ionic equation, with state symbols, to show the reaction of calcium with an excess of water.

Ca(s)+ 2H2O(l) ---> Ca2+(aq) + 2OH– (aq) + H2(g)
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Answered by Owais M. • Chemistry tutor
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