into sand and water. 36. Give examples of noble metals. Why are they called noble metals? 37. Explain the following according to the kinetic molecular theory. (a) melting (b) boiling (c) condensation (d) freezing 38. Give the characteristics of (a) elements (c) mixture (b) compounds 1
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36. Metals like Gold(Aurum), Silver, Platinum, Rhodium etc are called noble metals. These metals are called so because when looking at the reactivity series of metals, these metals are placed the t last of the series which shows that they show a negligible reaction to other elements.
36. Metals like Gold(Aurum), Silver, Platinum, Rhodium etc are called noble metals. These metals are called so because when looking at the reactivity series of metals, these metals are placed the t last of the series which shows that they show a negligible reaction to other elements.37. Freezing point is the temperature at which a liquid changes its phase to become a solid. The process is called freezing. The kinetic theory of matter says that all matter is composed of particles that have a certain amount of energy which allows them to move at different speeds depending on the temperature (energy).
36. Metals like Gold(Aurum), Silver, Platinum, Rhodium etc are called noble metals. These metals are called so because when looking at the reactivity series of metals, these metals are placed the t last of the series which shows that they show a negligible reaction to other elements.37. Freezing point is the temperature at which a liquid changes its phase to become a solid. The process is called freezing. The kinetic theory of matter says that all matter is composed of particles that have a certain amount of energy which allows them to move at different speeds depending on the temperature (energy).38. elements - A Basic substance that can be simplified.Made from one type of atom. Atoms have the same numbers of protons.
36. Metals like Gold(Aurum), Silver, Platinum, Rhodium etc are called noble metals. These metals are called so because when looking at the reactivity series of metals, these metals are placed the t last of the series which shows that they show a negligible reaction to other elements.37. Freezing point is the temperature at which a liquid changes its phase to become a solid. The process is called freezing. The kinetic theory of matter says that all matter is composed of particles that have a certain amount of energy which allows them to move at different speeds depending on the temperature (energy).38. elements - A Basic substance that can be simplified.Made from one type of atom. Atoms have the same numbers of protons.mixture - The mixture has no fixed composition.
The mixture has no fixed composition.To form a mixture energy is neither produced nor evolved.
a mixture energy is neither produced nor evolved.The mixture has no fixed melting points or boiling points.
a mixture energy is neither produced nor evolved.The mixture has no fixed melting points or boiling points.The mixture retains the properties of its components.
a mixture energy is neither produced nor evolved.The mixture has no fixed melting points or boiling points.The mixture retains the properties of its components.Components of mixtures can be separated by simple physical methods.
compounds- Components in a compound are present in a definite proportion.
Components in a compound are present in a definite proportion.It has a homogeneous composition.
Components in a compound are present in a definite proportion.It has a homogeneous composition.Particles in a compound are of one kind.
Components in a compound are present in a definite proportion.It has a homogeneous composition.Particles in a compound are of one kind.A compound is made up of one or more atoms of the same or different elements.
Components in a compound are present in a definite proportion.It has a homogeneous composition.Particles in a compound are of one kind.A compound is made up of one or more atoms of the same or different elements.In a compound the elements are present in a fixed ratio by mass.