Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 2.6.2 Acids, Alkalis & Neutralisation Acids & Alkalis When?acids?are added to water, they form positively charged?hydrogen ions?(H+) The presence of ...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 2.6.1 Indicators Two Colour Indicators Two colours indicators are used to distinguish between acids and alkalis Many plants contain substances that can act as indic...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 2.5.4 Alloys Alloys Alloys are?mixtures?of metals, where the metals are mixed together physically but are not chemically combined They can also be made from ...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 2.5.3 Using Metals Using Metals The uses of aluminium, copper and steel are summarised in these tables: Uses of Aluminium Uses of Copper...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 2.5.2 Extracting Metals Extracting Metals Extraction of metals and the reactivity series The most reactive metals are at the?top?of the series The tendency t...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 2.5.1 Sources of Metals Sources of Metals The Earth’s crust contains metals and metal compounds such as gold, copper, iron oxide and aluminium oxide Useful m...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 2.4.6 Practical: Investigate Metals Reacting with Acids Practical: Investigate Metals Reacting with Acids Aim: To investigate the reactions between dilute hydrochlo...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 2.4.5 Oxidation & Reduction Oxidation & Reduction Oxidation & reduction in terms of oxygen The reactions of metals with oxygen, such as in iron r...
2022年夏季A-Level/GCSE大考已經(jīng)結(jié)束。2022年夏季GCSE考試成績(jī)將會(huì)在8月25日公布，CIE考試局會(huì)更早一些，會(huì)在8月18日公布。A-level考試成績(jī)將于2022年8月17日下發(fā)給考試中心，8月18日向?qū)W生公布。 A-level/GCSE考...
