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Chemistry (Stage 2)

Chemistry (Stage 2)

Chemical Change

CHEMISTRY

1.1     Chemical Change

  Candidates should be able to:
Describe a chemical change as one in which new substances are made and as such the products have different properties from those of the starting materials.

1.1.1       state simple chemical reactions and word equations, including formation of oxides from metals, neutralisation and displacement reactions

Recall common chemical changes such as rusting and burning

1.1.2       describe chemical reactions which are not useful, e.g. rusting

 

1.1.3       outline energy changes in exothermic and endothermic reactions

 

1.1.4       formulate problems and design methods for investigating the reactivity of metals (with oxygen, water and dilute acids) and the reactivity series and examples of displacement reactions

 

1.1.5       describe neutrality, acidity and alkalinity the and use of indicators and the pH scale

 

1.1.6       describe neutralization reactions and their applications

 

1.1.7       state methods for preparing common salts by reaction of metals or metal carbonates with acids

Describe an experiment showing the need for both air and water to be present for rusting to occur.

 

 

1.1.8       formulate problems and design methods for experiments investigating the effect of concentration, particle size, temperature and catalysts on the rate of reactions

 

1.1.9       interpret qualitative and/or quantitative data from experiments investigating the effect of concentration and temperature on the rate of reactions

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