I'm trying to heat the contents of a beaker on a Bunsen burner but nothing is happening, what’s the problem?

First, you should verify that the beaker and Bunsen burner are connected. To connect any tool to glassware, you drag the tool to the glassware and when your cursor is in the middle of the glassware you click to connect them. For a Bunsen burner, a linked chain should appear to the left of the glassware to show that the labware was indeed connected and a stand comes into view beneath the glassware above the Bunsen burner. To further verify that the labware is indeed connected, try dragging the Bunsen burner to the side; if connected, the glassware and stand should move along with it. To turn the Bunsen burner on, you must open the Properties window and then click on the burner to put the focus on it. Click on the gas supply lever and it changes to “on.” If nothing happens, you may have a defective Bunsen burner, so throw it out via the Recycle bin and try another Bunsen burner from the Tools shelf.  more