In this section we’re walking to focus on the changes that occur during chemical reactions and also how this results an element.

You are watching: What occurs when potassium reacts with chlorine to form potassium chloride?

So to start with let’s take it a look in ~ word and also symbol equations. Indigenous equations deserve to be less descriptive of what is keep going in a reaction since there room not number to present the lot of reactants and products.

This is demonstrated in the reaction to create water – the well balanced symbol equation provides an ext chemical info than words equation.

To highlight some of the transforms in chemical reactions, we’re walk to use some instances to help!

If one atom develops an ion with a two optimistic charge the variety of electrons has decreased by two. Atom in group two the the routine table kind ions v a two hopeful charge.

They execute this when they bond v non-metal atoms, which involves the carry of electrons. The steel atom will certainly donate 2 electrons to the non-metal atom so that both atoms have actually a complete outermost energy level (noble gas configuration).

The ions are charged due to the fact that the variety of negatively fee electrons no longer cancels out the variety of positively charged protons.

Potassium creates ions through a hopeful charge. A link is developed when potassium reacts v chlorine, which forms ions with a an unfavorable charge. The formula of this link would thus be KCl.Potassium loses one electron when it reacts v chlorine. This electron is transferred to a chlorine atom to type a chloride ion. In KCl, both ion have full outer energy levels (noble gas configuration).

The ratio of ions in one ionic compound counts on their family member charges. Potassium and also chloride ions have the very same size charge (one), therefore there space the same variety of potassium ion as chloride ions in the compound.

So far, therefore good! only two much more examples come go!

A carry of electron occurs once fluorine and calcium react to type an ionic compound. This is due to the fact that calcium is in team two and also so creates ions through a two confident charge. Fluorine is in team seven so develops ions with a an adverse charge.

Calcium ions have twice as lot charge together fluoride ions. This way twice as many fluoride ions have to be current to do the overall charge of the ionic compound neutral.

And lastly, hydrogen and also sulfur space both non-metals. Hydrogen sulfide thus contains covalent bonds.

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This is due to the fact that when 2 non-metal atoms react, they carry out not type ions or ionic compounds. Instead, the outermost energy levels overlap and they re-superstructure electrons. A pairs of shared electrons renders one covalent bond. The compound created is well-known as a molecule.