English National Curriculum - Science
Mission Objectives
State what atom economy measures and why a high atom economy is important
Calculate the percentage atom economy of a reaction using a balanced equation
(HT) Explain how atom economy, yield, rate, equilibrium and by-products influence the choice of reaction pathway
Save files related to this lesson
Words and meanings to learn
reactants
the substances that take part in a chemical reaction and are used up during the reaction
percentage yield
a measure of how much product is obtained compared to the maximum possible amount, shown as a percentage
relative formula mass (Mr)
the sum of the relative atomic masses of all the atoms in a chemical formula
products
the substances formed as a result of a chemical reaction
atom economy
a measure of the efficiency of a chemical reaction, calculated by comparing the mass of useful products to the total mass of all reactants, expressed as a percentage
Sarah is a former headteacher and charity CEO who founded Developing Experts in October 2015 with the goal to create a fit-for-purpose curriculum for schools. The company has created a science curriculum for children ages 4-16 which is delivered through sequenced lessons mapped against the National Curriculum in biology, chemistry, and physics. Developing Expert's innovative approach to learning has already been road-tested and voted 'best EdTech product in Europe', winning Tech Nation’s Rising Stars earlier in 2019 and a place on Google for Startups Immersion program 2020. In 2022 Developing Experts won the BETT Awards for Best Classroom Resource - Teaching Aid. Sarah is a 'LDC Top 50 Most Ambitious Business Leader' 2022. In October 2022 Developing Experts joined Tech Nation's Upscale 8.0 programme.
Sarah is delighted to be working with over 6500 UK schools and clients such as the Royal Horticulture Society, Network Rail, Rolls Royce, BEIS, National Nuclear Labs, Anglian Water and the Ministry of Defence.
Sarah was awarded an MBE for her services to tech and education in 2020.
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!
Resources: Scientific calculator
Expert film
Mission assignment film
Address
Developing Experts Limited
Exchange Street Buildings
35-37 Exchange Street
Norwich
NR2 1DP
UK
Phone
01603 273515
Email
[email protected]
Copyright 2025 Developing Experts, All rights reserved.
Unlock expert-designed lessons, resources, and assessments tailored for educators. No credit card required.
Claim Your Free Trial →