top of page
Diffusion Lab: How Diffusion Changes with Temperature

How can we visualize molecular movement and correlate this with diffusion and osmosis? How does diffusion change with temperature? Once substances have diffused, do they ever separate? Students watch diffusion using food coloring and different temperatures of water. This is a great introductory lab before you begin to study diffusion and osmosis in more depth.

Concepts Addressed:
• Molecules are always in motion; this motion drives diffusion.
• Molecular motion changes with temperature; increasing temperature causes increased motion.
• Over time, two fluids will become completely mixed.

Materials Needed Clear cups, hot water, food coloring (optional: hard candy, milk, powdered drink mix)


Time Required This lab takes about 30 mins, but with extensions can take longer.


Student Sheets  Scaffolded writing prompts & lab reporting

Diffusion Lab: How Diffusion Changes with Temperature


    Answer Keys and Teacher Notes address most questions and issues that might arise in this study—you shouldn’t have to do any outside research unless you want to.

    Connect with me: If you have questions or problems, please let me know and I’ll get back to you as soon as I can.


    This resource (along with all resources sold on this site) can be found inside the membership. For information on that option, click here.

    Terms of Use   Copyright © Carolyn Balch. All rights reserved by the author. This product is to be used by the original downloader only. Copying for more than one teacher, classroom, department, school, or school system is prohibited. This product may not be distributed or displayed digitally for public view. Failure to comply is a copyright infringement and a violation of the Digital Millennium Copyright Act (DMCA). Clipart and elements found in this PDF are copyrighted and cannot be extracted and used outside of this file without permission or license. Intended for classroom and personal use ONLY.

    Related Products

    bottom of page