State what the term element means.
Complete the sentences below about the relative atomic mass of sulfur by choosing words from the list. The relative atomic mass of sulfur is the average mass of the sulfur [BLANK]. This average mass is compared with $\frac{1}{12}$ of the mass of an atom of [BLANK].
Sulfur is a solid at room temperature and pressure. Describe how the particles move and how far apart they are in solid sulfur.
Describe how a liquid's general physical properties differ from those of a solid. Give two differences.
Calculate the mass of disulfur dichloride formed when $19.2\,\text{g}$ of sulfur reacts with excess chlorine.
State the percentage by volume of oxygen in clean, dry air.
State one source of the air pollutant sulfur dioxide other than from burning sulfur.
State one harmful effect of sulfur dioxide in the air.
State one method for reducing sulfur dioxide emissions.
Give the formula of the ion present in every aqueous acid.
Complete the equation for this reaction by putting the sign for a reversible reaction in the box. $2\text{SO}_2 + \text{O}_2 \; [BLANK] \; 2\text{SO}_3$