Do you need a quicker lab for your students to measure the rate of a reaction? I've written one up that you can do in under 45 minutes! This product includes teacher instructions, a student lab sheet (with procedures) and an answer key. These items are in WORD format, so they're fully editable. If you're lucky enough to have more time, you can modify this lab to have students repeat the lab with a modified reactant surface area. It's a GREAT lab that works very well every time!
*You do need marble chips, 6M HCl, 140 mL syringes (without needles), syringe extenders, syringe stopcocks, small Erlenmeyer flasks, and one-hole rubber stoppers to fit the flasks.