9.3 Alloys and their properties
- Syllabus
- 0620–2026–2027
- Topic
- 9.3
- Level
- —
9.3.1—An alloy as a mixture of a metal with
- Describe an alloy as a mixture of a metal with other elements, (a) brass as a mixture of copper and zinc (b) stainless steel as a mixture of iron and other elements such as chromium, nickel and carbon
9.3.2—Alloys can be harder and stronger than
- State: alloys can be harder and stronger than the pure metals and are more useful
9.3.3—Uses of alloys in terms of their
- Describe uses of alloys in terms of their physical properties, including stainless steel in cutlery because of its hardness and resistance to rusting
9.3.4—Representations of alloys from
- Identify representations of alloys from diagrams of structure
9.3.5—Alloys can be harder/stronger than
- Explain why alloys can be harder/stronger than pure metals: different-sized atoms stop layers sliding easily
Objective notes
5 learning objectivesConceptIGCSE Chemistry