Which of these amines is/are used with aldehydes and ketones to form enamines? 
Definitions:
Object Reversibility
Refers to the cognitive recognition that relationships or operations can be returned to their original state from a changed state, underscoring a development in logical thinking.
Identical Balls
Objects that are exactly the same in every aspect, such as size, weight, texture, and material.
Concrete Operational Stage
A stage in Piaget's theory of cognitive development (approximately age 7-12) where children gain the ability to think logically about concrete events.
Transitive Inference
A form of reasoning that allows the deduction of relationships between items not directly compared, often formulated as "If A>B and B>C, then A>C."
Q13: Arrange the following amines in order of
Q16: Which of these would be predicted to
Q18: Which of the following bases has a
Q45: A compound has the molecular formula,C<sub>6</sub>H<sub>12</sub>O<sub>2</sub>.Its
Q71: What is the product,Z,of the following reaction
Q76: Which of the following would provide a
Q79: Which of these is a product of
Q84: What is the correct structure for 5-hydroxy-2-phenyl-3-hexanone?
Q86: Which of the following phenols would have
Q117: Electron-donating groups increase the electron density on