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Chemistry

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Nakia Fritsch

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Cards in this guide (10)
The energy required to completely dissociate two atoms that are covalently bonded together is called

Bond energy

Substance that speeds up the rate of chemical reaction

catalysts

promoters

The bond order for a double bond is

two

Polyatomic ions always carry a positive charge

false

Elements with an oxidation number of 2 include which of the following

Magnesium, Calcium

Is the making of ice cubes an exothermic reaction

No. It is an exothermic process, but it is a physical change, not a reaction.

What is the result of an atom that gains or loses an electron

This is called a redox reaction. An atom that loses an electron is oxidized and an atom that gains an electron is reduced.

Does The sharing of valence electrons between atoms indicates an ionic bond

No
false

Nitrogen dioxide would have which of the following formulas

NO2

If a chlorine atom were to attract an electron from sodium the chlorine atom would become charged.

positively

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