National Chemistry Week

National Chemistry Week is celebrated this year during the week of October 18-24, with the theme “Chemistry Under Construction.”

Chemistry plays a critical role in the strength, safety, and durability of the structures we use every day. Even small changes in a material’s chemical composition can significantly affect its properties. For example, adjusting the ratio of ingredients in concrete can change its strength, curing time, and resistance to weathering. These chemical differences determine how materials perform under stress and over time.

Construction materials are made up of a variety of chemicals and compounds. Concrete, one of the most widely used building materials, is a mixture of cement, water, sand, and aggregates. Steel, another essential construction material, is primarily composed of iron combined with carbon and other elements to improve strength and flexibility. Chemists and engineers work together to develop innovative materials that make buildings safer, stronger, and more sustainable.

Fun Fact: Did you know that concrete is the second most consumed substance on Earth after water?

Explore the resources below to learn more about chemistry’s contributions to construction, from the materials that build our homes and bridges to the innovations shaping the cities of the future. Together, we can celebrate National Chemistry Week by recognizing the many ways chemistry helps build stronger communities.