Across
- 3. A group of three elements with similar properties classified by scientist Johann Wolfgang Döbereiner.
- 4. A representation using symbols and chemical formulas to show reactants turning into products in a reaction.
- 5. Type of table where all known elements are categorized and arranged based on their repeating properties.
Down
- 1. Law proposed by Newlands stating that every eighth element repeats properties when arranged by atomic mass.
- 2. The scientist who arranged 63 elements by atomic mass into horizontal periods and vertical groups.