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3 years ago

In an ionic compound, the negative and positive ions are held together by __________.

Chemistry

1 answer:

nlexa [21]3 years ago

4 0

Answer:

the third one

Explanation:

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The substances present before a chemical reaction takes place are called?

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The substances present before the reaction are the reactants. (As the reaction goes through, the substances that are produced are called the products of the reaction).

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Complete the sentence indicating the number of protons and electrons in the given ion. Match the numbers in the left column to t

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Answer: (Chlorine-35)

Element X is Ca

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Number of proton plus the number of electron gives the mass number.

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3 years ago

Which of the following is an example of a chemical change?

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Answer:

Dissolving sugar in water, burning paper, and melting gold are all chemical changes

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The action cannot be reversed, or undone. Therefore it is a chemical change.

Boiling water is a physical change.

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2 years ago

Balanced equation of potassium chloride and ammonium nitrate; it’s types, net and observation

ASHA 777 [7]

Potassium chloride reacts with ammonium nitrate to give ammonium chloride and potassium nitrate.

This is a type of double displacement reaction. The balanced chemical equation can be represented as,

$KCl(aq)+NH_{4}NO_{3}(aq)-->NH_{4}Cl(aq)+KNO_{3}(aq)$

Total ionic equation for this reaction will be,

$K^{+}(aq)+Cl^{-}(aq)+NH_{4}^{+}(aq)+NO_{3}^{-}(aq)--> K^{+}(aq)+NO_{3}^{-}(aq)+NH_{4}^{+}(aq)+Cl^{-}(aq)$

There is no apparent reaction as this reaction is not accompanied by the formation of a gas or a solid precipitate. We cannot observe any visual reaction as there is not net reaction taking place. All the ions remain as spectator ions.

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3 years ago