HISTORY OF THE PERIODIC TABLE

Multiple Choice

Why did scientists need/want to organize the elements?

• Scientists like things organized
• make it easier to understand the elements
• have one list of the known elements.
• none of the above

Multiple Choice

The idea of "triads" of elements with similar properties was due to

• John Newlands

• Johann Dobereiner

• Dmitri Mendeleev

• Henry Moseley

Multiple Choice

In a chemical "triad", the masses of the three elements were related by the fact that

• the masses of the three were all the same

• their masses added up to 100%

• the average of the masses of the outer two equaled the middle one

• their masses were all unknown

Multiple Choice

Which of the following groups of elements could NOT be a triad?

• Cl, Br, I

• C, N, O

• Li, Na, K

• Ca, Ba, Sr

Multiple Choice

The "Law of Octaves" was the brainchild of

• Glenn Seaborg

• Lothar Meyer

• Johann Dobereiner

• John Newlands

Multiple Choice

The "Law of Octaves" stated that

• The properties of the elements repeated every eighth element when arranged by their atomic mass

• Elements could be classified in groups of three based on their mass and properties

• The properties of the elements repeated of a regular basis when arranged by their atomic number

• doubling the frequency of a tone raises its pitch by an octave

Multiple Choice

Which of the following is NOT a reason that the law of octaves failed?

• It didn't work for elements past calcium

• There was no provision for undiscovered elements

• It didn't explain similar properties of any elements

• Elements with very dissimilar properties were put into the same column

Multiple Choice

What was Dmitri Mendeleev's greatest contribution to the history of the periodic table?

• He arranged all of the known elements by their atomic number
• He realised that there was a pattern of reactivity which repeated every 8 elements
• He predicted the existence (and properties) of new elements
• He identified the "law of triads" which became the groups

Multiple Choice

Who arranged the first periodic table.

• Mosely
• Einstein
• Mendeleev
• Bohr

Multiple Choice

What property did Menedleev use to organize his first periodic table?

• atomic number
• atomic mass
• alphabetical order
• chemical properties

Multiple Choice

Why were there blank spaces left in Mendeleev's periodic table?                                              

• He didn't know what to put there.
•  Undiscovered elements not yet known.
• Multiple elements could have fit
• He forgot to add the elements in.

Multiple Choice

The first usable modern periodic table was developed by

• Dmitri Mendeleev

• Glenn Seaborg

• John Newlands

• Johan Dobereiner

Multiple Choice

Which of the following was NOT a reason that Mendeleev was given credit for the first periodic table rather than Lothar Meyer?

• Mendeleev published first

• Meyer didn't leave spaces for undiscovered elements

• Mendeleev corrected the mass of many elements

• Mendeleev classified anomalous elements by their properties rather than their mass

Multiple Choice

Moseley discovered that the ________ was the most fundamental property needed for organization.                                                 

• atomic mass
• mass number
• atomic number
• number of protons

Multiple Choice

Why was Henry Moseley responsible for solving the mystery of the anomalous elements on the periodic table?

• He corrected the mass of those elements

• He corrected the properties of those elements

• He discovered the electron

• He discovered atomic number

Multiple Choice

Who proposed the Law of Octaves?

• Lothar Meyer

• Henry Moseley

• John Newlands

• Dmitri Mendeleev

• J.J. Thomson

Multiple Choice

Which scientist organized the periodic table by atomic number?

• Mendeleev

• Moseley

• Dobereiner

• Seaborg

• Dalton

Multiple Choice

Which scientist is known for the Law of Triads?

• Mendeleev

• Moseley

• Dobereiner

• Seaborg

• Rutherford

Multiple Choice

Who is the Father of Periodic Table of Elements?

• Lothar Meyer

• Dmitri Mendeleev

• John Newlands

• Henry Moseley

Multiple Choice

Who discovered the Law of Octaves?

• Henry Moseley

• Lothar Meyer

• Antoine Lavoisier

• John Newlands

Multiple Choice

He published a table of the elements organized by increasing atomic mass.

• Dmitri Mendeleev

• Lothar Meyer

• John Newlands

• Henry Moseley

Multiple Choice

  Why were there blank spaces left in Mendeleev's periodic table?                                             

•  He didn't know what to put there.

•   Undiscovered elements not yet known.

• Multiple elements could have fit

• He forgot to add the elements in

Multiple Choice

Dmitri Mendeleev arranged the 63 known elements at the time by __________________.

• atomic number

• atomic mass

• neutron number

• none of the above

Multiple Choice

What significant change did Glenn Seaborg propose for the Periodic Table?

• Introducing the Actinide series

• Removing the Lanthanide series

• Rearranging the transition metals

• Adding a new group for noble gases

Multiple Choice

Which element is the first after Actinium in the Actinide series?

• Thorium (Th)

• Protactinium (Pa)

• Uranium (U)

• Neptunium (Np)

Multiple Choice

Who is credited with the formulation of the modern periodic law?

• Henry Moseley

• Lothar Meyer

• John Newlands

• Dmitri Mendeleev

Multiple Choice

Place the following scientists in order, from earliest to latest: 
A) Ernest Rutherford
B) J.J. Thomson
C) John Dalton

• B,C,A
• C,A,B
• A,C,B
• C,B,A

Multiple Choice

A ___________ is an arrangement of elements in columns

• columns
• rows
• periodic table
• electron shell

Multiple Choice

In the modern periodic table elements are arranged by:

• atomic mass

• atomic number

• valence electrons

• number of isotopes

Multiple Choice

A row in the periodic table is called a _________

• Period

• Group

• Element

• Pillar

Multiple Choice

A column in the periodic table is called a _________

• Period

• Group

• Element

• Pillar

Multiple Choice

Each box in the periodic table represents _________________

• An isotope

• An ion

• A period

• An element

Multiple Choice

The "properties" of a material are...

• ...its characteristics, features, and behaviour.

• ...what the material owns.

• ...only what it looks like.

• ...only how it behaves in certain situations.

Multiple Choice

A _____________ property is how a substance behaves when it undergoes a chemical change, e.g. its flammability or pH.

• physical

• major

• chemical

• periodic

Multiple Choice

A _______________ property is how a substance behaves when it undergoes a physical change, e.g. its density or boiling point.

• physical

• chemical

• major

• periodic

Multiple Choice

The mass number (or "atomic weight") is sometimes called the _________________ (they are the same thing!).

• weight number

• heavy number

• relative number

• relative atomic mass

Multiple Select

The atomic number is...

(you can tick more than one)

• the number of protons

• the number of electrons

• the number of neutrons

• the number of atoms

Multiple Choice

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Multiple Choice

The modern periodic table is arranged by ____

• atomic mass

• atomic number

• ion charges

• number of isotopes

Multiple Choice

The vertical (up and down) columns in the periodic table are called

• groups

• towers

• periods

• atomic numbers

Multiple Choice

The horizontal (side to side) rows in the periodic table are called

• groups

• families

• periods

• atomic numbers

Multiple Choice

Which two elements are in the same period?

• boron (B) and lithium (Li)

• beryllium (Be) and calcium (Ca)

• phosphorus (P) and oxygen(O)

• boron (B) and phosphorus (P)

Multiple Choice

The scientist ____ is credited with the idea of arranging the elements in the periodic table according to their physical and chemical properties.

• Mendeleev

• Dobereiner

• Newlands

• Dalton

Multiple Choice

Mendeleev predicted that the empty spaces in his periodic table represented ____.

• isotopes

• radioactive elements

• permanent gaps

• undiscovered elements

Multiple Choice

Why did Dmitri Mendeleev leave spaces i his periodic table?

• He left spaces for undiscovered elements.

• He left spaces for discovered elements.

• He left spaces to be more organized.

• none of the above

Multiple Choice

The modern periodic table is organized by the number of __________ atomic number.

• decreasing

• increasing

• constant

Multiple Choice

According to Newlands' arrangement, which element is listed 8th?

• Oxygen (O)

• Fluorine (F)

• Sodium (Na)

• Magnesium (Mg)

Multiple Choice

What pattern did Newlands observe in the properties of elements?

• They were random

• They repeated every 8th element

• They increased linearly

• They decreased exponentially

Multiple Choice

How did Lothar Meyer's periodic table differ from Mendeleev's?

• It included noble gases

• It was arranged alphabetically

• It was based on atomic volumes

• It was based on atomic numbers

Multiple Choice

What was Henry Moseley's major contribution to the Periodic Table?

• He arranged elements by atomic number instead of atomic mass

• He introduced the concept of electron shells

• He discovered the noble gases

• He proposed the Actinide series

Multiple Choice

What is the atomic weight of Beryllium (Be) according to Mendeleev's Periodic Table?

• 9.4

• 10

• 11

• 12