English National Curriculum - Science
Mission Objectives
Describe the process of covalent bonding
Draw dot and cross diagrams to represent covalent bonding
Explain why covalent molecules form and relate the strength of bonds to chemical stability
Save files related to this lesson
Words and meanings to learn
atoms
the smallest particle of an element that can exist and still have the properties of that element
non-metals
elements found on the right side of the periodic table; they typically gain or share electrons when bonding and are poor conductors of electricity and heat
electrons
negatively charged subatomic particles found in energy levels (shells) around the nucleus of an atom
dot and cross diagram
a way of showing covalent bonding using dots and crosses to represent the outer-shell electrons of different atoms; it helps visualise which atoms are sharing or transferring electrons
covalent bonding
a type of chemical bonding that occurs between non-metal atoms; it involves the sharing of pairs of electrons to achieve a full outer shell and form a molecule
Samantha is an accomplished science educator with over 15 years of leadership experience and a strong background in scientific analysis. She has a proven record of leading departments effectively, improving practice, and working collaboratively with stakeholders.
In her current work, Samantha embeds evidence-informed pedagogical principles such as retrieval practice, clear modelling, and effective sequencing to support high-quality curriculum design and professional development. She draws on assessment insight and common misconceptions to help teachers secure strong student understanding.
She is a former Head of Chemistry and Sixth Form Tutor at Ilkley Grammar School, with extensive Key Stage 4 and 5 experience, and an AQA examiner, giving her valuable insight into assessment standards and exam requirements.
In her spare time, Samantha enjoys playing the accordion with her local orchestra and has recently taken up cricket.
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 2026 Developing Experts, All rights reserved.
Unlock expert-designed lessons, resources, and assessments tailored for educators. No credit card required.
Claim Your Free Trial →
