Last seen: Sep 10, 2021
Sodium and calcium can displace hydrogen from dilute acids. Copper and silver cannot displace hydrogen from dilute acids.
These are oxides that can act both as acid and base. For example, aluminium oxide (Al2O3) and zinc oxide (ZnO). The amphoteric character of zinc oxide...
(a) With the help of a hammer, convert both the metal arid non-metal (solid) into plates or rods. Metal will readily form these since they are malleab...
(c) Zinc is more reactive than tin
(c) applying a coating of zinc
(d) AgNO3 solution and copper metal
Alloys are the homogeneous mixture of two or more metals, or even metals and non-metals.
Metals such as gold (Au) and platinum (Pt) present at the bottom of the reactivity series do not corrode easily.
Magnesium (Mg) will displace both zinc (Zn) and copper (Cu) from their oxides Mg + ZnO ➝ MgO + Zn Mg + CuO ➝ MgO + Cu Zinc will displace copper ...
The chemical process is known as reduction.
The metals are gold (Au) and platinum (Pt).
(a) Minerals: The naturally occurring com-pounds of metals along with some impurities are called minerals. (b) Ores: The minerals from which metals...
In the formation of ionic compounds, positive ions (cations) and negative ions (anions) participate. These are closely packed and the ionic compounds ...
The green colour of the solution would slowly disappear. Zinc would gradually dissolve and iron would get precipitated at the bottom of the beaker. ...
Hydrogen gas (H2) is produced when a reactive metal reacts with dil. hydrochloric acid. Iron and dil. H2SO4 react as follow: Fe(s) + H2SO4(dil.) ➝ F...
Based on the activity series, the relative position of the metals involved in solutions is: Zn > Fe > Cu > Ag. On the basis of the results gi...
(a) 3Fe(s) + 4H2O(g) ➝ Fe3O4(s) + 4H2(g) (b) Ca(s) + 2H2O(7) ➝ Ca(OH)2(aq) + H2(g)
It is a highly reactive metal. Sodium reacts both with air and water. When kept in open, it readily combines with the oxygen present in air to form it...
Malleable: The property due to which a substance can be beaten into thin sheet is known as malleability. For example, gold and silver Ductile: T...