Credit: RHYS LEWIS, AHS, DECD, UNISA/SCIENCE PHOTO LIBRARY

Caption: Temperature and chemical reactions. Animation showing the effect of temperature on collision frequency between molecules, an example of the collision theory of chemical reactions. The animation starts with two boxes of equal volume containing gas or liquid molecules. The box at left is at 25 degrees Celsius, while the box at right is at 50 degrees Celsius. The number of collisions (shown at bottom in each box) is recorded over a period of 15 seconds (timer at top centre). The rate of collisions is approximately twice as fast in the box at a higher temperature, leading to a faster reaction rate. Collision theory is closely related to reaction kinetics. For similar animations showing the effects of surface area and concentration on collision frequency, see clips K005/4858 and K005/4860.

Release details: Model release not required. Property release not required.

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Temperature and chemical reactions

K005/4852 Rights Managed

Downloadable master

Duration: 00:00:20.01

Frame size: 1920x1080

Frame rate: 24

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 198.2M

Original

Capture format: QuickTime Animation

Codec: Animation

Please contact Science Photo Library if you require the original, or other formats.

 

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