1. The greek philosopher Democritus coined what word for a tiny piece of matter that cannot be divided?
A. Element
B. Atom
C. Electron
D. Molecule

2. According to John daltons Observations, when elements combine in a compound,
A. the ratio of their Masses is always the same.
B. each element contributes an equal number of atoms
C. their volumes are always equal.
D. their masses are always equal