Speak into your microphone and Ben will repeat what you say in a deep, silly voice. You can also tap the phone icon to have a "conversation" where he responds with "Yes," "No," or a burp.
Some versions of the app require you to earn or watch ads for more chemicals to continue experimenting. Recording & Sharing
Pressing the chemistry button transports Ben to his lab, where he is much happier.
Use buttons at the bottom of the screen to make Ben eat dog food or beans, drink water or apple juice, and inevitably belch. The Chemistry Laboratory