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4 years ago

Describe the difference between an element and a compound.

Chemistry

1 answer:

n200080 [17]4 years ago

7 0

Explanation:

An element is a distinct substance that cannot be split-up into simpler substances. Such substances consists of only one kind of atom. There are over a hundred known element that has been discovered to date. Most elements are symbolized based on some conventions.

A compound is a substance that is formed from two or more kinds of atoms/elements joined together in a definite grouping. The properties of a compound is different from those of the individual elements that combines to make them up. Several millions of compounds are known. They are derived from the combination of elements.

How will ions combine to form compounds?

Ions are formed when an atom loses or gain electrons. This leaves them with either a net positive or negative charge on them.

Most atoms gives up their ions in order to attain a stable electronic configuration.

When two oppositely charged ions are brought close to each other, they attract one another with an electrostatic force. This attraction is what forms the bonds in making ionic/electrovalent compounds.

learn more:

Ionic compounds brainly.com/question/6071838

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3 years ago

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How many grams of sodium fluoride should be added to 300. mL of 0.0310 M of hydrofluoric acid to produce a buffer solution with

Kisachek [45]

Answer : The mass of sodium fluoride added should be 0.105 grams.

Explanation : Given,

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$pK_a=-\log (6.8\times 10^{-4})$

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$\text{Mass of }NaF=\text{Moles of }NaF\times \text{Molar mass of }NaF=0.0025mole\times 42g/mole=0.105g$

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