Chemical Reactions (2 of 11) Single Replacement Reactions, An Explanation

A chemical reaction is a process that leads to the chemical change of one set of chemical substances to another. Chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms. In a chemical reaction there is no change to the nuclei of the atoms. They can often be described by a chemical equation. Chemical equations are used to graphically illustrate chemical reactions. They consist of the chemical formulas of the of the reactants on the left and those of the products on the right. They are separated by an arrow (→) which indicates the direction and type of the reaction. The most common types of chemical reactions are: double replacement, single replacement, combustion, decomposition and synthesis.

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[mrs.r.]

Excellent, this helped my son understand and also see how single replacement reactions work. Thank you for posting.

[stepbystepscience]

@Laurevia lo, you can only use the criss cross method for each individual COMPOUND.  For example you would use it for AlCl3.  Al is +3 and Cl is -1, therefore AlCl3.  Copper (Cu) is a metal and therefore an ELEMENT, you do not (actually can not) use the criss cross method for an element, nothing to cross.  The formula for a pure metal is just the symbol of the element.

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[k.e.l.]

When I saw the scorched pipette, I just started laughing. Reactions like that are part of the reason Chemistry is just so awesome.

[lauranelson]

Great video, very helpful. Loved watching the actual reaction! 🙏🏻 You’re helping me pass a very hard chem class. Thanks so much!

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[littleyellowpurse]

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