Answer:
A substance that can accept a hydrogen ion from another substance- a different type of base.
A substance that produces an excess of hydroxide ions (OH-) in aqueous solution- Arrhenius base
A substance that produces an excess of hydrogen ions (H+ ) in aqueous solution- Arrhenius acid
A substance that can donate a hydrogen ion to another substance.- a different type of acid.
Explanation:
Arrhenius defined an acid as any substance that produces hydrogen ion as its only positive ion when dissolved in water and a base as a substance which produces hydroxide ions as its only negative ion when dissolved in water.
This has informed the classification of definitions shown in the answer above.