Answer: 1.
: oxidation reduction
2.
: precipitation
3.
: Double displacement
Explanation:
Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.
Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.
![Cu(s)+4HNO_3(aq)rightarrow Cu(NO_3)_2(aq)+2NO_2(g)+2H_2O(l)](https://tex.z-dn.net/?f=Cu%28s%29%2B4HNO_3%28aq%29rightarrow%20Cu%28NO_3%29_2%28aq%29%2B2NO_2%28g%29%2B2H_2O%28l%29)
Double displacement reaction is defined as the reaction where exchange of ions takes place. Double displacement reaction in which one of the product remain in solid form are represented by (s) after their chemical formulas. Such double displacement reaction are called as precipitation reaction.
![Cu(NO_3)_2(aq)+2NaOH(aq)\rightarrow Cu(OH)_2(s)+2NaNO_3(aq)](https://tex.z-dn.net/?f=Cu%28NO_3%29_2%28aq%29%2B2NaOH%28aq%29%5Crightarrow%20Cu%28OH%29_2%28s%29%2B2NaNO_3%28aq%29)
Double displacement reaction is defined as the reaction where exchange of ions takes place.
![CuO(s)+2HCl(aq)\rightarrow CuCl_2(aq)+H_2O(l)](https://tex.z-dn.net/?f=CuO%28s%29%2B2HCl%28aq%29%5Crightarrow%20CuCl_2%28aq%29%2BH_2O%28l%29)
Single displacement reaction is defined as the reaction where more reactive element displaces a less reactive element from its chemical reaction.
Decomposition reaction is defined as the reaction where a single substance breaks down into two or more simpler substances.
Synthesis/Combination reaction is defined as the reaction where substances combine in their elemental state to form a single compound.
The results of Dominic and Eva's experiment is unreliable and can lead to a pseudoscientific claim primarily because they did not repeat their tests multiple times. Although, they used the same type of stopwatch in recording the time it takes for the chemical reaction to occur, they have different reactions times. Thus, it would have been better if they conducted several trials then obtained the average of their results.
<span>I believe thats false. think about the mummys youve seen? do you see fine detail and intact organs</span>
Silver is Ag from the latin Argentum
Lead is Pb from the latin Plumbum
Covalent bonds and it is between the hydrogens (hydrogen bonds)