When evaluating the benefits and risks of salt use, why are 'long-term risks' like soil salinity often considered more problematic than short-term benefits?
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Practise MYP Chemistry questions on 5 Types of Chemical Reaction and review the explanations to check your understanding.
Use these questions for topic practice and to find ideas you want to revisit in your notes or lessons.
When evaluating the benefits and risks of salt use, why are 'long-term risks' like soil salinity often considered more problematic than short-term benefits?
True or False: Bromothymol blue is a suitable indicator for a titration between a strong acid and a strong base because its transition range (pH 6.0–7.6) overlaps with the expected equivalence point.
In the preparation of an insoluble salt via precipitation, what is the primary purpose of washing the solid residue on the filter paper with distilled water?
In the context of the law of conservation of mass, what specifically occurs to the atoms of the reactants during a chemical reaction?
True or False: The products of an endothermic reaction are generally more energetically stable than the reactants because they have absorbed energy.
They immediately increase the cost of food production
They are only hazardous when the salt is in its solid form
They build up gradually and are difficult to reverse
They prevent the salt from dissolving in water
True
False
To dissolve the precipitate for further testing
To remove any remaining soluble spectator ions from the surface
To encourage the growth of larger, cubic crystals
To neutralize any unreacted acid left in the solid
True
False
The atoms are rearranged into different combinations to form products
The atoms are converted into energy to facilitate the reaction
The atoms of the reactants are destroyed and new atoms are created
The atoms lose a negligible amount of mass as they form new bonds