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What is an unsaturated hydrocarbon?

Unsaturated hydrocarbons contain at least one carbon carbon double bond , the simplest is the alkene. They are more reactive than saturated hydrocarbons because they have the ability to undergo addition reac...
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Answered by Chloe A. • Chemistry tutor
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What is the difference between an Atom and an Ion?

An atom has the same number of protons and electrons so an atom has no overall electric charge. If an atom loses or gains electrons it becomes an ion. An ion is either positive or negative because it has an ...
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Answered by Phoebe W. • Chemistry tutor
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A metal oxide has a relative formula mass (Mr ) of 81. The formula of this metal oxide is MO. Given that the relative atomic mass (Ar ) of oxygen is 16, what is the metal in the metal oxide?

The formula of the metal oxide is MO, which means there is only one oxygen atom bonded to the metal. The Mr of a compound is the sum of Ar of the elements that make up the compound. So, from this we can cons...
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Answered by Jack T. • Chemistry tutor
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Why are GORE-TEX type materials are waterproof and yet breathable?

The material is made up from nylon laminated with a PTFE / polyurethane membrane. The m embrane is too fragile on its own hence why it is combined with the nylon. T he h oles in membrane are too small for wa...
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Answered by Lily B. • Chemistry tutor
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Describe and explain the trend in reactivity down the alkali metals group.

Reactivity increases down the group. This is because the outer electron in each atom is further away from the nucleus as you go down the group and so the electrostatic forces between the nucleus and the oute...
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Answered by Ahmad T. • Chemistry tutor
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