sunscreen

"The blacklight made the fluorescent paint glow with ultraviolet. "

"The chemist studied the properties of the organic compound. "

"The chemistry experiment showed that carbon dioxide, a gas we exhale, contains two oxygen atoms for every carbon atom. "

"The bicycle frame was made of titanium because it needed to be strong and lightweight. "

"After spending the whole day at the beach, she got a painful sunburn. "

"The box containing my old toys was stored in the attic. "

"Condoms are designed to protect against sexually-transmitted diseases."

"A mirror reflects the light that shines on it."

"heat radiation"

"The company absorbed the smaller firm, and now all the employees work together under one roof. "

"The spread of the flu was rapid in the school this week. "

""During the war, the refugees lived in guarded compounds for their safety." "