Chemistry

What factors affect the rate of a chemical reaction? In this laboratory activity, students will perform the classic iodine-starch clock reaction to quantitatively investigate the effects of concentration, temperature, and a catalyst on the rate of re...

How fast will a chemical reaction occur? Too slow, and it may not be practical. Too fast, and it may explode! Studying reaction rates helps chemists make a variety of products, everything from antibiotics to fertilizers, safely and economically. The ...

Give students a challenge, and they will eagerly compete to meet or beat the goal! Promote inquiry in this guided-inquiry kinetics experiment by using the classic iodine clock demonstration to lay the groundwork for student problem-solving. Students ...

How fast will a chemical reaction occur? Too slow, and it may not be practical. Too fast, and it may explode! In this activity-stations lab, students investigate various factors that influence the rate of chemical reactions. Five independent mini-lab...

The acid-base indicators phenolphthalein, crystal violet, and bromphenol blue turn various bright colors in basic solutions. Surprisingly, these colors will eventually fade if the solution is too basic! In this technology-based experiment, students a...

Students learn how reaction rates are measured and how temperature affects the rate of a reaction as they design kinetics experiments for the reaction of magnesium with hydrochloric acid. Pre-lab preparation built into the activity ensures students w...

How does reactant concentration affect the reaction rate? This relationship is expressed in an equation called a rate law. In this laboratory activity, students will perform the reaction between hydrochloric acid and sodium thiosulfate solutions at v...

This unique microscale chemistry kit allows pairs of students to run and time eight trials simultaneously! The effects of concentration, temperature and a catalyst on the rate of an iodine clock reaction are tested. A starch solution acts as an indic...