CK-12 Physical Science Concepts - For Middle School

http://www.ck12.org Chapter 3. Chemical Interactions

Summary

• The rate of dissolving of a solute in a solvent is faster when the solute and solvent are stirred, the solvent is
  warmer, or the solute consists of smaller particles with more surface area.

Explore More

Design an experiment to investigate the effects of temperature on the rate of dissolving. You can see an example in
the video at the following URL. Identify dependent and independent variables and factors that need to be controlled.
Make a list of materials needed for your experiment, and write a step-by-step procedure. http://www.youtube.com/w
atch?v=TO42FOay7rg

MEDIA

Click image to the left for use the URL below.

URL: http://www.ck12.org/flx/render/embeddedobject/5006

Review

1. List three factors that affect the rate at which a solute dissolves in a solvent.


2. Gina is trying to dissolve bath salts in her bathwater. How could she speed up the rate of dissolving?