Considering that silicon is a metalloid, which of the following statements is true? a. silicon's ability to conduct electric current does not vary with temperature. b. silicon does not conduct electric current under any conditions. c. silicon is a better conductor of electric current than silver is. d. silicon is a better conductor of electric current than sulfur is

Option (D) is the correct answer.

Explanation:

Metalloids are the substances that show properties of both metals and non-metals.

When it is considered that silicon is a metalloid then it means it also hows properties of both metals and non-metals. Therefore, like metals silicon is able to conduct electric current.

Whereas sulfur is a non-metal and it is known that non-metals do not conduct electric current.

Therefore, we can conclude that the statement silicon is a better conductor of electric current than sulfur is true.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

1 is the answer to this problem