Chemistry Questions for ADRE Grade III 2027
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Chemistry — Quick Overview
Basic chemistry concepts for ADRE. Focus on acids/bases, elements, and everyday chemistry.
Key Formula
Acid pH < 7 | Base pH > 7 | Neutral pH = 7 | Water: H₂O | Salt: NaCl
Exam Tip
Know chemical names of common substances: Baking soda=NaHCO₃, Lime=CaO, Vinegar=Acetic acid.
Common Trap
Atomic number = protons (not mass). Carbon-12 has 6 protons and 6 neutrons.