T1L2 Knowledge Check Quiz

What is the smallest unit of an element that retains the properties of that element?

• Atom

• Molecule

• Compound

• Mixture

Which scientist is credited with creating the first version of the periodic table?

• Albert Einstein

• Dmitri Mendeleev

• Isaac Newton

• Marie Curie

What does each horizontal row in the periodic table represent?

• Group

• Period

• Family

• Block

Which of the following is a property of metals?

• Brittle

• Poor conductor of electricity

• Shiny (luster)

• Dull

What is the atomic number of an element?

• The number of protons in its nucleus

• The number of neutrons in its nucleus

• The number of electrons in its outer shell

• The sum of protons and neutrons

Which element is found in Group 1 and Period 2 of the periodic table?

• Lithium

• Sodium

• Potassium

• Hydrogen

What is the symbol for the element oxygen?

• Ox

• O

• Oy

• Og

Which of the following elements is a noble gas?

• Nitrogen

• Neon

• Sodium

• Nickel

Which group on the periodic table contains the most reactive metals?

• Group 1 (Alkali metals)

• Group 2 (Alkaline earth metals)

• Group 17 (Halogens)

• Group 18 (Noble gases)

What information can you determine from the position of an element in a period?

• The number of protons

• The number of electron shells

• The number of neutrons

• The atomic mass