Reaction schemes and observations – basics and principles
How it works
A chemical reaction scheme describes how starting substances (educts) are converted into new substances (products). It shows the substances involved, often with chemical symbols or names, and indicates how they react with one another. Observations in chemical reactions can include changes such as a color change, gas evolution, temperature change or formation of a precipitate. The reaction scheme is not an equation with balanced particle numbers, but a simplified representation of the transformation of substances.
A reaction scheme names the starting substances and products of a chemical reaction by name or symbol and indicates the direction of the transformation of substances. Observations describe perceptible changes during the reaction.
An example
Which reaction scheme describes the reaction of magnesium with oxygen?
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50 Exercises · three difficulty levels · selection and number input
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: KMK Educational Standards Mathematics ESA/MSA. The topic assignment may vary by federal state.