Solid silicon (Si) and solid magnesium chloride (MgCl2) form when silicon tetrachloride(SiCl4)gas reacts with magnesium metal(Mg). Write a word equation and an unbalanced formula equation including physical states.

Silicon tetrachloride gas reacts with solid magnesium metal producing solid silicon and solid magnesium chloride.

SiCl₄(g) + Mg(s) → Si(s) + MgCl₂(s)

Explanation:

The reaction of SiCl₄(g) with Mg(s) produce Si(s) and MgCl₂(s). A way to write a word equation could be:

Silicon tetrachloride gas reacts with solid magnesium metal producing solid silicon and solid magnesium chloride.

The unbalanced formula equation including physical states is:

SiCl₄(g) + Mg(s) → Si(s) + MgCl₂(s)

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