1
Q
What happens in a physical change? (4)
A
- Substance changes state
- Changes shape/breaks
- No new substances are made
- Many can be reversed
2
Q
Examples of physical changes? (2)
A
- Freezing water
- Dissolving sugar in water
3
Q
What is a chemical change? (3)
A
- Produces a new substance and may change state
—> Properties of new substance very different from original - Many difficult to reverse
4
Q
Examples of chemical changes? (2)
A
- Cooking
- Rusting
Chemistry
flashcards
Decks in class (16)
# Cards
-
C1.1.1 - Introducing Particles6
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C1.1.2 - Chemical/Physical Changes4
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C1.1.3 - Limitations2
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C1.2.2 - Isotopes3
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C2.1.1/2 - Rlt. Form Mass + Empirical4
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C2.1.3 - Pure/Impure Substances3
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C2.1.4 - Filtration/Crystallisation6
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C2.1.5 - Distillation4
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C2.1.6 - Chromatography8
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C2.1.7 - Checking Purity (.6 Summary)7
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C2.2.1 - Metals/Non Metals6
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C2.2.2 - Electronic Structures4
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C2.2.3/4 - Ions + Ionic Compounds3
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C2.2.5 - Simple Molecules5
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C2.2.6/7 - Giant Covalent Struct./Polymer Molecules3
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C2.2.8 - Structure of Metalsl7
