Explain that atoms can bond by sharing electrons.

Explain that atoms can bond by sharing electrons is best revised by linking the named science to Universal chemistry ideas, then checking it against examples from Key ideas in chemistry. Approved keywords include atom. atom is useful here because in Universal chemistry ideas, atom means the smallest particle of an element that retains the properties of that element. This matters in Key ideas in chemistry because it supports the learning objective to explain that atoms can bond by sharing electrons. Use atom only in this subtopic-relevant sense so the definition stays concise, curriculum-specific, and useful for AQA GCSE Biology revision. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions. Avoid students often confuse electron sharing in covalent bonding with electron transfer in ionic bonding; instead remember that covalent bonding involves sharing electrons between atoms, while ionic bonding involves the transfer of electrons from one atom to another. Remember to focus on how atoms share electrons in covalent bonding and the significance of this process in forming molecules. Link your answer to Universal chemistry ideas in Key ideas in chemistry, and keep the biology specific to atom. This understanding is crucial for explaining molecular behavior and properties, which is often assessed in exams. This keeps revision aligned with the approved learning objective on explain that atoms can bond by sharing electrons.