A. The amount of randomnes in the system
Answer: It is heterogeneous.
Explanation: Not evenly distributed
Answer:
Dmitri Mendeleev
used patterns to predict undiscovered
elements
Johann Wolfgang Dobereiner
created groups of three elements,
each based on similar properties
John Newlands
arranged elements according to their
atomic mass
Antoine Lavoisier,
divided elements into four categories
✓
Is constant (matter that has a composition that is the same everywhere)