Zn does not reacts with water ...
Elementary zinc does not react with water molecules. The ion does form a protective, water insoluble zinc hydroxide (Zn(OH)2) layer with dissolved hydroxide ions, according to the following reaction mechanism:
Zn2+ + 2OH- ---> Zn(OH)2(s)
it only reacts with boiling water forming zinc hydroxide and hydrogen...
Zn + 2H2O ==> Zn(OH)2 + H2
Its fairly nonreactive.
Zn hardly reacts with cold water.
It does however react with steam (heated water) to produce zinc oxide and hydrogen gas:
Zn (s) + H2O (l) --> ZnO (s) + H2 (g)
Adding water to heated copper sulfate crystals is a chemical change. When water is added to heated copper sulfate crystals, the copper sulfate undergoes a chemical reaction where it dissolves in the water to form a solution. This is a chemical change because the chemical composition of the copper sulfate is altered during the process.
chemical equation of heated iron and sulfur is as follows. FeS can be obtained by the heating of iron and sulfur:Fe + S → FeS.
When a hot air balloon flies, the burner at the base of the balloon ignites propane to produce a chemical reaction that converts the propane into carbon dioxide and water vapor. This reaction releases heat, which warms the air inside the balloon, causing it to rise and lift the balloon.
When copper sulfate pentahydrate is heated, the water molecules are driven off, leaving anhydrous copper sulfate as the solid residue. The chemical equation for this reaction is: CuSO4*5H2O(s) → CuSO4(s) + 5H2O(g).
The change is a chemical change known as a chemical reaction. When heated, the iron and sulfur react to form a new compound called iron sulfide.
If there is no chemical reaction occurring in the solution as a result of heating then this scenario constitutes a phase change.
ammonia should release on heating.
A reaction of oxydation with the oxygen from air.
Adding water to heated copper sulfate crystals is a chemical change. When water is added to heated copper sulfate crystals, the copper sulfate undergoes a chemical reaction where it dissolves in the water to form a solution. This is a chemical change because the chemical composition of the copper sulfate is altered during the process.
A chemical reaction
Bubbles forming on heated water are usually due to the process of water vaporization rather than a chemical reaction. When water is heated, the molecules gain energy and move faster, eventually reaching a point where they break free from the liquid surface and form bubbles of water vapor. This phase change is a physical process, not a chemical reaction.
chemical equation of heated iron and sulfur is as follows. FeS can be obtained by the heating of iron and sulfur:Fe + S → FeS.
When magnesium is heated, it undergoes a chemical reaction with oxygen in the air to form magnesium oxide. The total mass remains the same since no mass is lost or gained during a chemical reaction.
They finally found a solution to the friction problem. The chemical solution was starting to crystallize.A solution in science is a liquid mixture where the minor component is totally dispersed within the major component.The solution turned blue when we heated it.We stirred the chemical into the solution.
When Benedict's solution is heated, the reduction reaction between the copper (II) ions and the glucose or other reducing sugars present causes the solution to change color from blue to green, yellow, orange, or red, depending on the amount of reducing sugar present. This color change indicates the presence of reducing sugars in the sample being tested.
When hydrogen peroxide is heated, it breaks down into water and oxygen gas. The chemical equation for this reaction is: 2 H2O2 -> 2 H2O + O2
When an onion is heated, the chemical reaction that occurs is caramelization. This reaction involves the breakdown of sugars in the onion due to heat, resulting in the browning and sweetening of the onion. Additionally, when onion is heated, sulfur compounds are released, giving it its distinct aroma and flavor.