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krek1111 [17]
3 years ago
7

In order for convection to transfer heat, particles need to

Chemistry
2 answers:
inna [77]3 years ago
7 0
It’s b make contact with the heat source
scZoUnD [109]3 years ago
7 0
The answer is B, for something to become hot like a pan it needs to be touching something hot
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What was John Dalton's contribution to the development of the atomic theory?
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John Dalton made some hypothesis about the structure of atom. He proposed that matter is composed of great number of indivisible particles called atoms they can neither be destroyed nor be created.

<h3>What is atomic theory?</h3>

There are different theories regarding the structure and electronic properties of an atom. Many scientists contributed to the modern theory of atomic structure in which John Dalton was first to mention the word atom.

According to Dalton' theory, matter is composed of indivisible particles called atoms. Atoms can neither be created nor be destroyed. All the atoms of the same element are identical in all aspects.

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The alkali earth metal beryllium (Be) engages in a chemical reaction and loses all of its valence electrons.
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The loss of electron from an results in the formation of cation represented by the positive charge on the element whereas gaining of electron results in the formation of anion represented by the negative charge on the element.

The alkali earth metal beryllium (Be) belongs to the second group of the periodic table. The ground state electronic configuration of Be is:1s^{2}2s^{2}

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