Edexcel IGCSE Physics 复习笔记 1.1.2 Speed
Edexcel IGCSE Physics 复习笔记 1.1.2 Speed Calculating Average Speed The speed of an object is the distance it travels every second Speed is a scalar quantity This is because it only contain...
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Edexcel IGCSE Physics 复习笔记 1.1.2 Speed Calculating Average Speed The speed of an object is the distance it travels every second Speed is a scalar quantity This is because it only contain...
Edexcel IGCSE Physics 复习笔记 1.1.1 Distance-Time Graphs Distance-Time Graphs A distance-time graph shows how the distance of an object moving in a straight line (from a starting position) ...
Edexcel IGCSE Chemistry 复习笔记 2.7.9 Practical: Prepare Lead(II)Sulfate Practical: Prepare Lead(II)Sulfate Aim: To prepare a dry sample of lead(II) sulfate Diagram: The prepa...
Edexcel IGCSE Chemistry 复习笔记 2.7.8 Practical: Prepare Copper(II)Sulfate Practical: Prepare Copper(II)Sulfate Aim: To prepare a pure, dry sample of hydrated copper(II) sulfate crystals Materials...
Edexcel IGCSE Chemistry 复习笔记 2.7.7 Prepare an Insoluble Salt Prepare an Insoluble Salt Insoluble salts can be prepared using a precipitation reaction The solid salt obtained is the preci...
Edexcel IGCSE Chemistry 复习笔记 2.7.6 Prepare a Soluble Salt II Prepare a Soluble Salt II Aim: To prepare a sample of a dry salt starting from an acid and an alkali Diagram: Diagram ...
Edexcel IGCSE Chemistry 复习笔记 2.7.5 Prepare a Soluble Salt Prepare a Soluble Salt A soluble salt can be made from the reaction of an acid with an insoluble base During the preparation of ...
Edexcel IGCSE Chemistry 复习笔记 2.7.4 Bases Bases What makes a base act like a base? Bases are substances which can neutralise an acid, forming a salt and water The term base and alkali are not th...
Edexcel IGCSE Chemistry 复习笔记 2.7.3 Reactions of Acids Reactions of Acids Reactions of acids with metals Only metals above hydrogen in the reactivity series will react with dilute acids T...
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