AQA Trilogy GCSE Science Science

4. Internal Energy

Mission Objectives

Define internal, potential energy and temperature

Describe how internal energy changes during a change of state

Explain why state changes occur due to the disruption of forces of attraction between particles

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Keywords

Words and meanings to learn

internal energy

the total energy contained within a system, including both the kinetic energy of the particles due to their motion, and the potential energy due to the forces of attraction between them

potential energy

the energy stored due to the positions and interactions between particles

kinetic energy

the energy that particles possess due to their motion

particle

a small unit of matter, such as an atom or molecule, that makes up a substance

temperature

a measure of the average kinetic energy of the particles in a substance; it indicates how hot or cold a substance is and is usually measured in degrees Celsius (°C)

This lesson has been written by

Samantha Batch

Samantha is a dedicated and accomplished science educator with over 15 years of leadership experience in the field, coupled with a strong background in scientific analysis. She has a proven track record of strategically managing educational departments, driving operational efficiencies, and nurturing collaborative relationships with stakeholders. 

Samantha previously served as the Head of Chemistry and Sixth Form Tutor, Ilkley Grammar School, Ilkley with extensive Key Stage 4 and 5 teaching experience and leadership. In addition to her teaching and leadership roles, she is also an examiner for AQA, providing her with valuable insight into assessment standards and exam specifications.

In her spare time, Samantha enjoys playing the accordion with her local orchestra and has recently taken up cricket, where she's enthusiastically honing her skills both on and off the pitch!

Required Resources

Handout - states of matter questions.

Exam questions.

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