Science 7 - The Periodic Table of Elements

The scientist who first arranged the elements into a periodic table with increasing order of atomic masses.

• Dmitri Mendeleev

• John Newlands

• Lothar Meyer

• Henry Moseley

How many periods or rows are there on the periodic table?

• 18

• 7

• 8

• 10

What do we call the vertical columns in the periodic table?

• group

• period

• series

• line

What is the symbol for potassium on the periodic table?

• P

• Po

• K

• Pt

What does atomic number represents in the periodic table?

• The number of neutrons in an atom.

• The number of protons in an atom.

• The number of electrons in an atom.

• The valence electrons in an atom.

Which of the following elements has a symbol NOT taken from their ancient name?

• silver

• mercury

• platinum

• gold

Elements with features intermediate between those of nonmetals and metals.

• Gases

• halogens

• Metalloids

• Radioactive elements

Which was the first element that was made artificially?

• Hassium

• Radium

• Technetium

• Uranium

Which of the chemical elements belong to the alkali metal group?

• Calcium

• Potassium

• Berrylium

• Radium

Nonmetals are brittle and are normally used as insulators. Which of the following pairs of elements are nonmetals?

• C and P

• S and I

• Sn and Pb

• Ca and Zn