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What is the complete list of symbols or signs used in chemical reaction?
Wiki User
∙ 11y ago
Here is a chemical symbol reaction.
HCl(aq) + NaOH)aq) = H2O(l) + Na^+(aq) + Cl^-(aq)
This describes the reaction between hydrochloric acid (HCl) and sodium hydroxide(NaOH). The reaction produces water(H2O) and sodium cations and chloride anions.
The '(aq)' means aqueous, in other words the substances/ions are dissolved in water. The '(l)' means that the water is in a liquid state, neither ice nor steam.
Other symbols are '(s)' solid, and '(g)' gas.
Also that the reaction is balanced chemically, you have NOT 'magiced' up extra atoms
Another reaction is the thermal decomposition of calcium carbonate.
CaCO3(s) ==heat==> CaO(s) + CO2(g)
Notice that the physical agent 'heat' is put in the 'equals' and is not a reactant.
An incorrect chemical reaction is
H2SO4(aq) + NaOH(aq) = NaSO4(aq) + 2H2O(l)
This is because the 'Law of Conservation of Mass' is not observed.
Reason ;
#1 You start of with '5' (4+1)oxygens and end up with '6' (4+2)oxygens. Where has the extra oxygen atom come from ????
#2 Similarly, you start of with '3'(2+1) hydrogens and end up with '4' (2 x 2 = 4)hydrogens. Where has the extra hydrogen atom come from ???
#3 'NaSO4' is the incorrect formula for sodium sulphate. It should be 'Na2SO4'.
The correct reaction equation is
H2SO4(aq) + 2NaOH(aq) = 2H2O(l) + 2Na^+(aq) + SO4^2-(aq) ; [Na2SO4]
You will find that all the atoms of the elements balance.
So please make sure you balance all your chemical reactions. !!!!
lenpollock
Wiki User
∙ 11y agochemical reaction with symbol
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Yes, the signs of a chemical reaction are: gas, precipitation, heat, color change
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The question does not have the enough required information that is required to accurately answer it.
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Can a chemical reaction cause heat?
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The question does not have the enough required information that is required to accurately answer it.
What is a chemical reaction Hint Think of the table with signs of a chemical reaction?
The question does not have the enough required information that is required to accurately answer it.
The changes that are visible during a chemical reaction are signs that the?
If it is a true or false question it is false
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Some signs could be: *solids forming *bubbles *color change *temp. change
What are the signs needed in chemical reaction?
color changeformation of a precipitatetemperature changeformation of gas bubbles
List three signs that could make you think a chemical reaction might be taking place?
Some signs that a chemical reaction is taking place is color and temperature changes, and the formation of precipitates.
The changes that are visible during a chemical reaction are signs that the nuclei in the reactants have been rearranged.?
False.
How you can tell if a mixture is a chemical reaction?
a mixture is by definition not a chemical reactionA mixture is two or more substances which have been combined such that each substance retains its own chemical identity.So a mixture cannot be a chemical reaction, signs of a chemical reaction include:colour changeprecipitation (formation of a solid)effervescence (giving off gas)And every single chemical reaction involves gives of some heat.
How could you visually tell that something is having a chemical reaction?
If you see fizzing, bubbling, or a change in color. They're good signs of chemical reactions you can see. Also, smoke. If you see smoke, you probably have a chemical reaction.
