- Download the worksheet to save time writing
- Start solving the practice problems
- If you're stuck, watch the video solutions
- See your summary to get more insights

A sample of water (H2O) that weighs 1.0 g decomposed into 0.111 g H and 0.889 g O. Another sample of a different compound decomposes into 0.059 g of H and 0.941 g of O. Identify the empirical formula of the other compound based on Dalton's atomic theory.
Choose the statement that is NOT part of Dalton's Atomic Theory
A. Atoms are regrouped through a chemical reaction.
B. Compounds formed are in whole-number ratios of different atoms of elements.
C. Atoms, the basic particles of matter, cannot be created or destroyed.
D. Protons, neutrons, and electrons are subatomic particles that comprise the atom.
E. A particular element has chemically and physically identical atoms.
Choose from the following statements which are inconsistent with the implications and postulates of Dalton's atomic theory.
I. Two oxygen atoms combine with one nitrogen atom to form a molecule of nitrogen dioxide.
II. One lithium atom can have a mass of 6 amu while another can have a mass of 7 amu.
III. Atoms are the smallest particles of all matter.
IV. Atoms can be created.
V. Atoms of a compound are fixed and cannot rearrange.