With Zev’s questions about: What are titrations, and How do you do them? We set-up a backyard acid-base titration with cabbage juice as an indicator dye.
After we finished our acid-base titration we began talking about lab safety and safety equipment. We looked at pictures of kids of lab safety equipment such as; lab coats, safety goggles, close-toed shoes, gloves, fume hoods, emergency showers and eye wash stations.
Zev particularly loved the concept of emergency eye wash stations because he (being three years old) loves anything sprays water in the summer, and here was a novel water sprayer in a chemistry lab.
He built his own emergency eye wash station:
And demonstrated how to use it: