Which best describes a semiconductor?

semiconductors are more conductive than a nonmetal and less conductive than a metal.

semiconductors are more conductive than a nonmetal and less conductive than a metalloid.

semiconductors have a high electrical conductivity.

semiconductors have a no electrical conductivity.

Correct answer choice is :

A) Semiconductors are more conductive than a nonmetal and less conductive than a metal.

Explanation:

A semiconductor element has an electrical conductivity amount dropping within that of a conductor such as copper, gold and an insulator, such as glass. Semiconductors can be purified components, such as silicon or germanium, or mixtures such as gallium arsenide or cadmium selenide. In a method named doping, minute quantities of contaminants are combined with pure semiconductors producing large variations in the conductivity of the substance.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.