Would adding syrup to coffee make it sweeter?

Adding syrup to coffee would indeed make it sweeter. Syrups generally contain a high concentration of sugar, and when added to coffee, the dissolved sugar molecules interact with the taste receptors on the tongue, triggering a sweet taste sensation. The sweetness intensity depends on the amount of syrup added and the type of syrup used. Different syrups vary in their sugar content and flavor profiles, so the choice of syrup can influence the sweetness and overall flavor of the coffee.