nitrocellulose

"My dad is a real enthusiast; he watches every baseball game he can. "

"The strong, burning smell was a warning sign that sulphuric acid might be present. "

"The old-fashioned photographer used collodion to coat the glass plates before taking a picture. "

"The factory's efficient manufacture of toys allowed them to sell many at a low price. "

"Asphalt, composed of oil and sand, is a widely used material for roads."

"Construction workers use explosives to break down large rocks. "

"The new math strategies were applied successfully in the classroom. "

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"He covered the baby with a blanket."

"My dad took the airplane to visit his sister in another city. "

"My grandmother grows cotton plants in her garden. "

"The paper we use in our science class is made from cellulose. "