Chapter 16.3 and 17

What was the name of the scientist that created the periodic table?

• Dmitri Mendeleev

• Henry Moseley

• Ms. Staup

• Mrs. Morgan

Mendeleev placed the elements in order on the periodic table by increasing _____________

• Atomic number

• Proton Number

• Atomic Mass

• Neutron Number

When Dmitri created the periodic table, about how many elements had been discovered?

• 13

• 63

• 118

• 54

True/False: Mendeleev put the elements in order by increasing atomic mass, but also grouped them based off of similar properties

• True

• False

Why do elements in the same group have similar chemical and physical properties?

• They have the same number of protons

• They have the same number of neutrons

• They have the same number of valence electrons

• Because Ms. Staup said so

True/False: Mendeleev did NOT leave blank spaces on the periodic table, and could NOT predict element properties.

• True

• False

Today, how many elements are on the periodic table?

• 63

• 450

• 75

• 118

In 1913, ___________ rearranged the periodic table to be in order of increasing atomic number.

• Henry Moseley

• Dmitri Mendeleev

• Gregor Mendel

• Albert Einstein

What is the name of the vertical columns on the periodic table?

• Periods

• Collectives

• Groups

• Tables

What is the name of the horizontal rows on the periodic table?

• Periods

• Collectives

• Groups

• Tables