Answer:
Well i know that a chemical change is somthing that can not be undone.
This however is a physical change let me explain.
Even though you mixed two chemicals together to create a new substance does NOT mean it is a chemical change. This however is kinda like a water. You can turn water into a ice cube that does not mean it changed what the water is made out of it just changed the form of the water. Kinda like this. A chemical change would be an example of buring a log once that log has turned into ashs it will never be the log it was before.
Explanation:
Answer:
okay
Explanation:
I can help u u can ask question .....
Answer is: the evidence that a chemical reaction occurred is formation of white precipitate (change of color).
Balanced chemical reaction: AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq).
Solutions of silver nitrate and sodium chloride do not have color.
From chemical reaction: n(NaCl) : n(AgCl) = 1 : 1.
n(NaCl) = n(AgCl).
m(AgCl) = m(AgCl) · M(AgCl).
Answer: 3<u> H₂O</u>
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Explanation:
This is an example of a common chemical reaction
ACID + CARBONATE --> SALT + WATER + CARBON DIOXIDE which implires
CITRIC ACID + SODIUM BICARBONATE ----> SODIUM CITRATE + WATER + CARBON DIOXIDE .
The full chemical equation is given by
H3C6H5O7(aq) + 3NaHCO3(aq) --> Na3C6H5O7(aq) + 3CO2(g) + 3<u>H2O</u>(l)
The reaction produces a fizz due to the release of carbon dioxide which can be also seem when an Alka-Seltzer® tablet is dissolved in water.
