silica

"The school science project involved identifying different rocks based on the minerals they contained, like quartz and feldspar. "

"You can create the color orange by mixing yellow and red."

"Glass is made from silicate. "

"I packed some sugar packets in my lunchbox to sweeten my tea at work. "

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

"The bird's nest was a concrete example of how strong and carefully constructed things can be. "

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

"The carpenter carefully cutting the wood with a sharp knife. "

"The computer chip contains silicon, a key element for its operation. "

"drops / beads of moisture"

"Construction is underway on the new bridge."

"My new jacket is made of soft leather. "