Usually.
yes
I think you mean metal + water = metal hydroxide + hydrogen. This is a displacement reaction. It can also be called a redox reaction.
All reactive metals undergo a similar single-displacement reaction with water. They all form hydrogen.
A more reactive metal pushes out a less reactive metal out of a compound element, eg. CuSo4+Mg=MgSo4+Cu
The chemical reaction is:Cu + 2 AgNO3 = 2 Ag + Cu(NO3)2
Na2O + H2O ---> 2NaOH this is a metal oxide (base) reacting with water to form an alkali
I think you mean displacement reactions. There are 2 types of displacement reactions: single, and double displacement. Single displacement is when a metal -nonmetal reacts with a metal or a nonmetal atom, and the metal or nonmetal atom switches places with the one in the molecule. Double displacement is when two molecules (same as above) react, and the metals/nonmetals (it doesn't really matter in this case) are swapped. They both have a switching of places between atoms, so I guess this is how they are similar.
A single replacement reaction will not occur. In a single replacement reaction, either a metal will replace another metal in a compound, or an anion will replace another anion in a compound. Click on the related link to see the Wikipedia article on single displacement (single replacement).
I think you mean metal + water = metal hydroxide + hydrogen. This is a displacement reaction. It can also be called a redox reaction.
2HCl + Mg = MgCl2 + H2 It is a displacement reaction.
An activity series of metals can predict whether a replacement (displacement) reaction will occur. You use the activity series to compare the reactivity of different metals in order to predict whether a replacement reaction will occur. A metal that is above another metal in the series will replace that metal in a compound.
See the Related Questions to the left for information about Single and Double Displacement Reactions.when one metal is more reactive than another they switch places for example:magnesium+copper oxide--magnesium oxide+copperthey switch places because magnesium is more reactive metal.
All reactive metals undergo a similar single-displacement reaction with water. They all form hydrogen.
Potassium is an alkali metal with one valence electron more reactive than zinc which has completely filled d orbitals. Hence potassium will react with water and not zinc.
A more reactive metal pushes out a less reactive metal out of a compound element, eg. CuSo4+Mg=MgSo4+Cu
the acidity and chemicals in coke are strong enough to reverse the displacement reaction
No, it is a single displacement reaction. It can also be called a redox reaction. It is not an acid base reaction because although hydrochloric acid is obviously and acid, magnesium is a metal, not a base.
What is the metal cation that gives the 'green' colour.