Fredrick is doing a lab on pH. He uses many household items to determine the pH of his items. Which of his actions best describes inappropriate lab safety?
He changes into closed-toed shoes before lab starts.
He doesn't wear goggles because he is using household chemicals.
He asks his teacher if he can mix high- and low. pH solutions before discarding them.
He leaves his workstation to identify all of the safety equipment in the lab.