Mass changes in chemical reactions

A hand pressing the zero or tare button on a laboratory balance

Source: © Shutterstock

Perform two chemical reactions to see whether any mass changes occur in this microscale class practical. Includes kit list and safety instructions.

In this experiment, students measure the mass of various reactant solutions before and after reaction to see whether there has been any change in mass.

As an outcome of this practical, students should understand that matter is not created or destroyed in chemical reactions, and that this is a very fundamental aspect of chemistry. It should also help them in balancing chemical equations.

Make your lessons pop

Choose an account option to continue exploring our full range of articles and teaching resources

Register for a personal account

Free

Free access for everyone, everywhere. If you only need a few resources, start here.

What's included

One free teaching resource each month
Five free Education in Chemistry articles each month
Personalised email alerts and bookmarks

UK and Ireland only

Join Teach Chemistry

Free for eligible users

Free and comprehensive access for teachers and technicians at secondary schools, colleges and teacher training institutions in the UK and Ireland.

What's included

Unlimited access to our resources and practical videos
Unlimited access to Education in Chemistry articles
Access to our online assessments
Our teacher well-being toolkit and personal development resources
Applications for funding to support your lessons

Subscribe for extended access

£80 per year

Get unlimited articles and resources each month, plus discounts on professional development courses.

What's included

Unlimited access to our resources and practical videos
Unlimited access to Education in Chemistry articles
10% off our self-led professional development courses

Subscribe now