There are two overarching types of assessment in educational settings: informal and formal assessments. Both types are useful when used in appropriate situations. Informal assessments are those assessments that result from teachers' spontaneous day-to-day observations of how students behave and perform in class.
In the chemical industry it is used to heat reactants and in processes such as distillation, product drying, electrolysis, and treatment of waste. At present, the energy used still relies mainly on fossil fuels, but even so the use of these can be reduced in several ways (Table 2).
Lets consider the reaction between zinc metal and hydrochloric acid as such an example. a) What are the products of the chemical reaction... show more To prepare oxygen gas we need to decompose hydrogen peroxide. There are many other chemical reactions that generate gases as one of their products. Lets consider the reaction between zinc metal and hydrochloric acid as such an example.