Some properties of compound J are listed. • It reacts with potassium carbonate to produce carbon dioxide. • It reacts with ethanol to produce a sweet-smelling liquid. • It reacts with sodium hydroxide to produce a salt. What is a possible identity of J?

With which substance will ethene react to form more than one product?

When a compound X is reacted with sodium carbonate, carbon dioxide gas is evolved. What could be the formula of compo…

The diagrams show four monomers. How many of these monomers would react with the molecule below to form a polymer?

The diagram shows part of the Periodic Table. Which pair of letters represents elements that are in the same period?

Which row shows the correct number of protons and electrons in the ion of an element in Group II of the Periodic Table?

The oxide of an element X increases the rate of decomposition of hydrogen peroxide. At the end of the reaction the ox…