Which scientists grouped elements into three, called then triads, and arranged those triads according to similar chemical and orderly physical properties?

• John Newlands

• Dmitri Mendeleev

• Henry Moseley

• Johann Dobereiner

In triads, the elements are grouped according to certain chemical and orderly physical properties. What are some of the properties they were organized by? Mark all that apply.

• density

• color

• smell

• melting point

• electron configuration

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NGSS.HS-PS1-1

Fill in the blank: _____________ arranged elements in order of ______________ so that certain properties repeated every ___ element.

• John Newlands; increasing atomic mass; 8th

• John Newlands; increasing atomic mass; 2nd

• John Newlands; decreasing atomic structure; 6th

• John Newlands; increasing atomic structure; 3rd

• John Newlands; decreasing atomic mass; 4th

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What is the Law of Octaves?

• if the chemical elements are arranged according to increasing atomic mass, those with similar physical and chemical properties occur every 8th element

• if the chemical elements are arranged according to decreasing atomic weight, those with similar physical and chemical properties occur every 6th element

• if the chemical elements are arranged according to increasing atomic structure, those with similar physical and chemical properties occur every 4th element

• if the chemical elements are arranged according to decreasing atomic mass, those with similar physical and chemical properties occur every 8th element

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NGSS.HS-PS1-2

After what element did the Law of Octaves fail? Type the name or symbol of the element. DO NOT insert spaces.

Who was the first scientist ever to publish a table of elements listed in order of increasing atomic mass?

• Dmitri Mendeleev

• John Newlands

• Glenn T. Seaborg

• Johann Dobereiner

Who was known as the Father of the Periodic Table?

• Glenn T. Seaborg

• John Newlands

• Dmitri Mendeleev

• Johann Dobereiner

Fill in the blank (NO MATTER WHAT YOU THINK THERE IS ONLY 1 RIGHT ANSWER!): _____________ left ___________ spaces and was able to predict the ___________ properties of three elements.

• Johann Dobereiner; vacant; physical

• John Newlands; vacant; chemical

• Dmitri Mendeleev; vacant; physical

• Dmitri Mendeleev; vacant; chemical

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NGSS.HS-PS1-1

Who rearranged the periodic table according to increasing atomic number?

• Dmitri Mendeleev

• John Newlands

• Albert Einstein

• George Washington

• Henry Moseley

What is the Periodic Law?

• The physical and chemical properties of the elements are periodic relations of their atomic numbers

• The physical properties of the elements are periodic functions of their atomic numbers

• The physical and chemical properties of the elements are periodic functions of their atomic numbers

• The chemical properties of the elements are periodic functions of their atomic numbers

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2