Chemistry 6.1

Open Ended

Why was it important for scientists to find a logical way to organize the elements?

Open Ended

Why was Mendeleev's periodic table an improvement over Dobereiner's triad classification system and other earlier systems?

Multiple Choice

Are elements with similar properties found in the rows (periods) or columns (groups) of the modern periodic table?

• rows

• columns

Open Ended

All of the known elements are listed in the periodic table. What are different ways you could use the periodic table to classify elements?

Multiple Choice

Is there more variety of properties among metals or among nonmetals?

• metals

• nonmetals