Melting point depends on
how strong the attractions
are between the molecules or ions of the pure substance
Does higher conductivity mean higher boiling point?
Although solid ionic compounds do not conduct electricity because there are no free mobile ions or electrons, ionic compounds dissolved in water make an electrically conductive solution. … Therefore, they have
higher melting and boiling points compared
to covalent compounds
Does boiling point affect conductivity?
Sodium, magnesium and aluminium are good electrical conductors
Do conductors have low melting points?
| Metals Non-metals | Good conductors of electricity Poor conductors of electricity | High density Low density | Malleable Brittle |
|---|
Do conductors have high melting points?
Metals
are good conductors of heat and have high melting points.
Does conductivity affect solubility?
The warmer the solution, the
higher the solubility of the material being dissolved
and therefore the higher the conductivity as well.
Does conductivity increases down the group?
As you go down the group Electrical Conductivity
increases due to the growing of the Atomic Radius
. But be aware that despite some elements being in the bottom of the group, non-metals are poor conductors.
Which type of substance is soft has a low melting point and is a poor conductor of electricity?
Explanation:
Covalent solids
are soft, have a low melting point (due to relatively weak bonds), and are a poor conductor of electricity (due to absence of free ions).
Why do nonmetals have low melting and boiling points?
A lot of nonmetals, like oxygen and chlorine are highly electronegative: they have high affinity for electrons and effectively pry them from the other atom, so the bond breaks easily. As a result, these nonmetals have
subzero melting point temperatures
.
Which compound is soft and has low melting point?
Covalent solids
are soft, have a low melting point (due to relatively weak bonds), and are a poor conductor of electricity
Which Crystal has highest melting point?
Covalent crystals
have highest melting points because of network structure.
Which type of crystal has highest melting point?
Covalent crystal
: Covalent crystals are hard and have very high melting points due to strong attractions between covalently bonded atoms. Such crystal substances do not conduct electricity because the electrons are tightly bound to the bonds.
Which compound is a poor conductor of heat and electricity and has a high melting point?
The properties of
ionic crystals
reflect the strong interactions that exist between the ions. They are very poor conductors of electricity, have strong absorption of infrared radiation, and are easily cleaved. These solids tend to be quite hard and have high melting points.
Does salt increase conductivity?
What is conductivity? Conductivity is a measure of the ability of water to pass an electrical current. Because dissolved salts and other inorganic chemicals conduct electrical current,
conductivity increases as salinity increases
.
Does conductivity increase with temperature?
The conductivity invariably
increases with increasing temperature
, opposite to metals but similar to graphite. It is affected by the nature of the ions, and by viscosity of the water. … All these processes are quite temperature dependent, and as a result, the conductivity has a substantial dependence on temperature.
What factors do not affect conductivity?
The factor which is not affecting the conductivity of any solution is.
Dilution
, temperature and nature of electrolyte affect the conductivity of solution.
