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How can potassium form an ionic compound with sulphur?

An ionic compound is formed from positive and negative ions which have balanced and opposite charges.K has 1 electron in it's outer shell. S has 6 electrons in it's outer shell. S needs 2 more electrons to f...
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Answered by Molly T. • Chemistry tutor
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Define Newton's three laws

1st Law - a body will move with constant velocity or remain at rest unless acted on by a resultant force 2nd Law - F = ma. The rate of change of momentum of an object is equal to the resultant force and it a...
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Answered by George W. • Physics tutor
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What is an infinitive verb and how do I conjugate one?

An infinitive verb is the most simple form of the verb that has not been adjusted to explain who is doing the action, but simply any action itself. In English, the infinitive verb will always begin with &quo...
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Answered by Amber H. • Spanish tutor
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Explain why diamond cannot conduct electricity but graphite can.

In the atomic structure of diamond, each carbon is bonded to four other carbons using all of its outer electrons, leaving none free to carry a charge. In graphite not all of the electrons are used in bonding...
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Answered by Lucy B. • Chemistry tutor
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Describe the structure of globular proteins.

There are 4 levels of structure associated with a globular protein; primary, secondary, tertiary and quarternary. The primary structure is the organisation of amino acids, bonded by peptide bonds. The second...
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Answered by Charlie K. • Biology tutor
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