What this topic covers
Topic C2: Elements, compounds and mixtures has 3 subtopics:
- Purity and separating mixtures
- Bonding
- Properties of materials
GCSE OCR Foundation Chemistry · Topic 2 of 7
Choose a subtopic. Topic C2: Elements, compounds and mixtures covers Purity and separating mixtures, Bonding, and Properties of materials in GCSE OCR Foundation Chemistry. 38 lessons in 3 subtopics.
Revise Topic C2: Elements, compounds and mixtures for GCSE OCR Foundation Chemistry, including Purity and separating mixtures. 38 lessons across 3 subtopics.
38
Lessons
3
Subtopics
Topic C2: Elements, compounds and mixtures has 3 subtopics:
38 lessons, grouped by subtopic.
Go back to the full GCSE OCR Foundation Chemistry topic list, or practise this topic with past-paper questions.
Topic C2: Elements, compounds and mixtures covers Purity and separating mixtures, Bonding, and Properties of materials in GCSE OCR Foundation Chemistry. 38 lessons in 3 subtopics.
An element is a substance made of only one type of atom, represented by a unique chemical symbol. The Elements, Atoms and Symbols notes cover this in full.
A compound is a substance formed when two or more elements are chemically combined in fixed proportions. The Compounds and Chemical Formulae notes cover this in full.
An ion is an atom or group of atoms that has gained or lost electrons, giving it an overall electric charge. The Ion Formation and Electron Arrangement notes cover this in full.
An alloy is a mixture of two or more elements, at least one of which is a metal. The Layered Structures and Alloys notes cover this in full.
Graphite has a layered giant covalent structure in which each carbon atom forms three covalent bonds with neighbouring carbon atoms, creating hexagonal rings. The Structure and Properties of Graphite notes cover this in full.
A polymer is a substance with very large molecules made from many repeating units, called monomers, joined by strong covalent bonds. The Structure and Properties of Polymers notes cover this in full.
A chromatogram is the pattern of separated substances produced by chromatography, showing spots at different distances from the origin. The Chromatogram Analysis and Rf Values notes cover this in full.
A covalent bond is a chemical bond formed when two atoms share a pair of electrons. The Understanding covalent bonds and drawing molecules notes cover this in full.