Three chemistry related materials or processes that have improved our lives could include but are not limited to the following:
The mass production of pharmaceutical drugs has been groundbreaking. Through the wonders of chemistry, labs are able to create high volume, relatively inexpensive solutions to treat people and their diseases.
The production of agricultural fertilizers has helped to improve crop production to feed the world's people. In third world countries prone to drought and insect destruction, chemical fertilizers are absolutely critical.
The explosion of chemically produced clothing from synthetic fibers has allowed consumers greater choice and versatility in fabric selection, longevity, and functionality. High tech fabrics are due to chemistry!
In order to learn more about the significance of chemistry, you may find it interesting to read about the work of famous Nobel Prize Chemistry winners by following the link below.