Chem Unit 6 Homework 1

Last updated 2 months ago

10 questions

Note from the author:

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Last updated 2 months ago

10 questions

Note from the author:

Review of the organization of the Periodic Table, scientists who developed the table, and characteristics of groups of elements

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Identify the sets of elements by the type of ion formed. 

Match the work to the scientist who was the first to propose the concept or to conduct the work.

Draggable item		Corresponding Item
Organized elements by mass and properties and predicted properties for elements that seemed to be missing from his arrangement.		John Newlands
Assigned an atomic number to each element which was later recognized as the number of protons.		Johann Dobereiner
Law of Octaves devised after arranging elements by atomic weight.		Henry Moseley
Involved in the creation of the first transuranium elements, atoms produced in a laboratory.		Dmitri Mendeleev
Recognized that the middle element in a group of 3 similar elements is the mathematical average of the other two in weight and density.		Glenn Seaborg

Identify the sets of elements by the type of ion formed. 

number of neutrons

mass number

atomic number

atomic weight

Draggable item		Corresponding Item
Metals that are found in items that we touch such as jewelry, coins, and utensils		Alkali Metals
Nonmetals that are nonreactive; elements that have color when electrified in a light tube		Transition Metals
Have 1 valence electron; metals that should not touch bare skin because they react quickly with water		Halogens
Form ions with a charge of -1; nonmetals that are very reactive; each element has a distinct color; used as disinfectants		Noble Gases

They have the same number of isotopes.

They have the same number of neutrons.

They have the same number of energy levels.

They have the same number of valence electrons.

The Octet Rule

The Noble Notion

The Law of Triads

The Law of Octaves

Draggable item		Corresponding Item
Highly reactive, colorful nonmetals		Noble Gases
Gases that have few known chemical reactions		Alkali Metals
Highly reactive, dangerous metals		Halogens

Match the work to the scientist who was the first to propose the concept or to conduct the work.

Organized elements by mass and properties and predicted properties for elements that seemed to be missing from his arrangement.

John Newlands

Assigned an atomic number to each element which was later recognized as the number of protons.

Johann Dobereiner

Law of Octaves devised after arranging elements by atomic weight.

Henry Moseley

Involved in the creation of the first transuranium elements, atoms produced in a laboratory.

Dmitri Mendeleev

Recognized that the middle element in a group of 3 similar elements is the mathematical average of the other two in weight and density.

Glenn Seaborg

Identify the sets of elements by name.

Halogens

A

Inner Transition Metals

B

Alkali Metals

C

Alkaline Earth Metals

D

Transition Metals

E

Noble Gases

F

Distinguish between columns and rows on the Periodic Table.

Families

Elements have the same number of energy levels

Elements have the same number of valence electrons

Groups

Periods

Elements have similar chemical and physical properties

Columns of Elements

Rows of Elements

Which trait is the first characteristic considered in organizing elements in the modern Periodic Law?

number of neutrons

mass number

atomic number

atomic weight

Identify the type of ion formed.

The atom has 5, 6, or 7 valence electrons

The atom has 1, 2, or 3 valence electrons

The atom is a nonmetal, such as O, P, or Br

The atom gains 2 electrons

The atom loses 3 electrons

The atom is a metal, such as Na, Ca, or Al

+ an ion with a positive charge

- an ion with a negative charge

Match the element family with its members' traits.

Metals that are found in items that we touch such as jewelry, coins, and utensils

Alkali Metals

Nonmetals that are nonreactive; elements that have color when electrified in a light tube

Transition Metals

Have 1 valence electron; metals that should not touch bare skin because they react quickly with water

Halogens

Form ions with a charge of -1; nonmetals that are very reactive; each element has a distinct color; used as disinfectants

Noble Gases

Why do neon and argon have similar chemical and physical properties?

They have the same number of isotopes.

They have the same number of neutrons.

They have the same number of energy levels.

They have the same number of valence electrons.

What rule states that atoms tend to lose, gain, or share electrons in order to get a full set of valence electrons?

The Octet Rule

The Noble Notion

The Law of Triads

The Law of Octaves

Match the family of elements with its characteristics.

Highly reactive, colorful nonmetals 

Noble Gases

Gases that have few known chemical reactions

Alkali Metals

Highly reactive, dangerous metals

Halogens