What is the opposition to the flow of an electric charge called?

Resistance.

Explanation:

The resistance of a conductor measures how much resistant it is to a flow of charge. Since the current is the flow of charge, its measure in a circuit tell us how much resistance there is.  Thus, for a given voltage lower the current in the circuit, greater the resistance. This relation is summarized by Ohm's Law:

where is the voltage across the circuit, the current, and is the resistance.

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is

that the claims meet official rules.

don't misinterpret the claims