Students investigate several chemical reactions and learn to describe them using word equations, identifying the signs that a reaction has occurred.
Tap a step to mark it as done.
Teach: reactant, product, word equation, react, combine, release, form. The arrow in a word equation means produces — not an equals sign.
Focus on one reaction only — vinegar and bicarbonate of soda — and establish the reactant/product concept fully before introducing more examples.
Can students write a correct word equation for a reaction they have observed? Can they identify at least three signs that a chemical reaction has taken place?
Vinegar, bicarbonate of soda, and water are very cheap and widely available. Rusting can be observed on any iron or steel object left in water.
Students often confuse dissolving with a chemical reaction. Dissolving is physical — the salt can be recovered. A chemical reaction produces something new that cannot be reversed by simple physical means.
Chemical reactions underpin all of chemistry, biochemistry, and materials science.
Your feedback helps other teachers and helps us improve TeachAnyClass.