Examlex
As children get older, the physical similarity between the objects they use in symbolic play and the real things
Ka
An equilibrium constant for the dissociation of a weak acid into its proton and conjugate base in solution; a measure of acid strength.
pKa
A measure of the acidity of a hydrogen atom in a molecule, indicating the tendency of the molecule to donate a proton.
Conjugate Acid
The species that is formed when a base gains a proton.
Ammonia
A compound of nitrogen and hydrogen with the formula NH3, noted for its pungent smell and use in fertilizers.
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