Summary Grade 8 Term 2 Natural Science Notes - Matter and Materials
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Course
Natural Science
Institution
8th Grade
This summary document contains all topics and subtopics covered in the subject of Grade 8 Natural Science Term 2. Detailed and infographic summary document with keywords, pictures, and diagrams included.
Natural
Science
Grade 8
Term 2 Matter
and Materials
, Definitions/Keywords
1. Neutrons – neutral particles that are found in the nucleus of the atom
2. Protons – positive particles that are found in the nucleus of the atom
3. Electron – negative particles that are found around the nucleus of the atom
4. Element – a substance that cannot be broken down into 2 or more materials by chemical means
5. Compound -is a material that consists of atoms of 2 or more different elements chemically
bonded together
6. Compound -is a material that consists of atoms of 2 or more different elements chemically
bonded together
7. Electrolysis is the process whereby an electrical current is sent through a solution to break it
down
8. Decomposition – a chemical reaction which breaks down a compound into simpler products
when energy is added
9. Cathode – the electrode closer to the positive pole of the battery
10. Anode - the electrode close to the negative pole of the battery
11. Diffusion – a process whereby particles in liquids and gases move from a highly concentrated
area to a lower concentrated area
12. Boil – the term used to describe quick change from a liquid to gas
13. Boiling point – the term used to describe the temperature at which a liquids temperature will
no longer increase
14. Sublimation – the term used to describe when a solid changes directly to gas
15. Deposition – the term used to describe when a material changes directly from gas to solid
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