Periodic Table Concepts and Properties

Who is credited with devising the periodic table?

• Isaac Newton

• Marie Curie

• Dmitri Mendeleev

• Albert Einstein

How are elements arranged in the periodic table?

• Alphabetical order

• Increasing atomic number

• Decreasing atomic mass

• Randomly

What does the atomic number of an element represent?

• The total number of electrons.

• The number of neutrons.

• The number of protons.

• The mass of the atom.

What are the horizontal rows in the periodic table called?

• Groups

• Blocks

• Periods

• Series

What are the vertical columns in the periodic table called?

• Periods

• Groups

• Rows

• Blocks

Why do elements in the same group of the periodic table have similar chemical properties?

• They have the same total number of electrons.

• They have the same number of electrons in their outermost shell.

• They have the same atomic number.

• They have the same mass number.

How many electrons do elements in Group 1 (Alkali Metals) have in their outermost shell?

• One

• Two

• Seven

• Eight

Which statement best describes the reactivity of Noble Gases (Group 0 elements)?

• They are highly reactive.

• They are moderately reactive.

• They are very unreactive.

• Their reactivity varies greatly.

What does the zigzag line on some periodic tables separate?

• Liquids from solids

• Metals from non-metals

• Gases from liquids

• Acids from bases

How can you typically identify the atomic number of an element on a periodic table, even if its position varies?

• It is always the largest number.

• It is always the smallest number.

• It is always the number at the top right.

• It is always the number at the bottom left.