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3 years ago

How does an atom differ from a molecule? In what ways are they similar?

Chemistry

1 answer:

Yuki888 [10]3 years ago

5 0

<u>Explanation:</u>

<u>Difference between the two:</u>

Atoms are defined as the smallest particle of a chemical element that exists. They are made up of protons, electrons and neutrons. Elements have similar kind of atoms present in them while compounds have different type of elements present in them.

Molecules are formed when two or more atoms of similar or different kinds bond together. For Example: $H_2O,N_2$ etc...

<u>Similarity between the two:</u>

A pure substance is defined as the substance which is formed by same or different type of atoms which are chemically combined in a fixed ratio by mass. Atoms and molecules are considered as pure substances.

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3CuCl2 + 2Al => 3Cu + 2AlCl3

Marrrta [24]

The reaction includes the single replacement reaction and redox

<h3>Further explanation</h3>

Single replacement : one element replaces another element in a compound

A + BC ⇒ AC + B

The oxidation-reduction reaction or abbreviated as Redox is a chemical reaction in which there is a change in oxidation number

3CuCl + 2Al => 3Cu + 2AlCl₃

1. Single replacement

Al replacing Cu in the CuCl compound

2. Redox reaction

3Cu²⁺ + 6e⁻⇒ 3Cu reduction(oxidation number from +2 to 0)

2Al⇒2Al³⁺+6e⁻ oxidation(oxidation number from 0 to +3)

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3 years ago

How many moles of calcium atoms are in 77.4g of Ca?

lina2011 [118]

Answer:

1.93 mol Ca

Explanation:

Use Calcium's molar mass to convert g of Ca into mol of Ca.

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3 years ago

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alexdok [17]

Scientists measured a drop in the average global temperature of about 1 degree F (0.6 degrees C).

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3 years ago

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ipn [44]

I think you forgot to give the options along with the question. I am answering the question based on my knowledge and research.All scientific theories <span>must be based on careful and rational examinations of the facts. I hope that this is the answer that you were looking for and it has actually come to your help.</span>

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shepuryov [24]

Answer:

2. they eat plants that get their energy from the sun

Explanation:

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I hope this helps and makes sense!

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