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UkoKoshka [18]
2 years ago
8

Select the correct answer. Which statement best explains the octet rule? A. Atoms gain, lose, or share electrons to achieve a fu

ll valence shell. B. Compounds always consist of eight electrons. C. Molecules always consist of eight atoms. D. All atoms require eight electrons to form bonds.
Chemistry
2 answers:
ASHA 777 [7]2 years ago
6 0

A. Atoms gain, lose, or share electrons to achieve a full valence shell.

Oduvanchick [21]2 years ago
6 0
<h2>Answer </h2>

Option A - Atoms gain, lose, or share electrons to achieve a full valence shell.

<u>Explanation</u>

The octet rule is best explained as atoms gain, lose, or share electrons to achieve a full valence shell complete or to attain electronic configuration of noble gases. The main objective to do this is to attain stability.  The octet rule is a rule that shows the view that atoms of elements serve to join like that each atom has eight electrons in its valence shell, providing it the same electron configuration as a noble gas.

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Chemists can use moles to calculate: A. How much of the products are needed and how much reactant will be made. B. How much prod
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Answer:

c.- How much of the reactants are needed and how much product will made.

Explanation:

The moles is the matter unit used in chemistry to simplify  some calculations, instead of using grams. Also the moles are very useful because the chemical reaction can be balanced.

When a Chemical reaction is balanced, then it can be easily to calculate how many moles are necessary to add in a process to obtain a quantity of grams of a product.

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Significant figures communicates the level of precision in measurements.
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In terms of energy, how would you classify the following chemical reaction?
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1. Answer;

- Exothermic reaction

Explanation;

-Exothermic reactions are types of chemical reactions in which heat energy is released to the surroundings. Since enthalpy change is the difference between the energy of products an that of reactants. It means that in an exothermic reaction the energy of products is less than that of products. In this case an energy of 315kJ is released to the surroundings.

2. Answer;

Conserved

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Explanation;

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Answer:

A

Explanation:

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