2. Atoms & Elements

Why are elements on the periodic table not arranged strictly by atomic mass?

Where are metals primarily located on the periodic table?

Which of the following is NOT something the periodic table helps scientists do?

How is the modern periodic table organized?

Which of the following does the periodic table primarily organize?

Which of the following best describes how the periodic table is useful as a tool in chemistry?

How are the elements in the current periodic table arranged?

Which of the following elements is classified as a metalloid?

Which classification best describes the element Ar (argon) in the periodic table?

Mendeleev arranged the elements in his periodic table primarily according to which physical property?

Which of the following elements is not classified as a metal?

How is the modern periodic table arranged?

Which pair of elements is most likely to share similar chemical properties?

Which of the following substances did Antoine Lavoisier correctly characterize as an element?

Which feature of Mendeleev's periodic table was considered particularly ingenious?