2023-2024 Periodic Table 낱말 카드 | Quizlet

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63 Terms

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center of an atom, contains most of the atoms mass

Nucleus

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the average mass of the atoms of an element

Atomic mass

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the number of protons in the nucleus of an atom

Atomic number

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A one or two letter representation of an element

Chemical symbol

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A subatomic particle that has a negative charge, located outside an atom nucleus

Electron

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a region around the nucleus of an atom where electrons are likely to be found

Electron cloud

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a substance that cannot be separated or broken down into simpler substances by chemical changes

Element

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Vertical column in the periodic table, elements have similar properties

Group

<p>Group</p>
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an element that is shiny and that conducts heat and electricity well. Located on the left of the periodic table.

Metal

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an element that has properties of both metals and nonmetals

Metalloid

<p>Metalloid</p>
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the particles of the nucleus that have no charge, located in an atom's nucleus

Neutrons

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Elements that are poor conductors of heat and electric current. Located on the right of the periodic table.

Nonmetals

<p>Nonmetals</p>
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A chart of the elements showing the repeating pattern of their properties

periodic table

<p>periodic table</p>
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A subatomic particle that has a positive charge and that is found in the nucleus of an atom

Proton

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protons, neutrons, and electrons that make up an atom.

subatomic particles

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Electrons on the outermost energy level of an atom

valence electrons

<p>valence electrons</p>
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18

number of groups on the periodic table

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7

Number of periods on the periodic table

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A horizontal row of elements in the periodic table

period

<p>period</p>
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protons

atomic number is based on an atom's

<p>atomic number is based on an atom's</p>
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Groups 3-12 elements

transition metal group

<p>transition metal group</p>
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group 17 on the periodic table

Halogens

<p>Halogens</p>
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Group 1 of the periodic table

alkali metals group

<p>alkali metals group</p>
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Group 2 of the periodic table

alkaline earth metals group

<p>alkaline earth metals group</p>
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Group 18

noble gases group

<p>noble gases group</p>
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2 electrons

1st energy level can hold

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chemical properties, like number of valence electrons

elements in a group have similar

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8 VE

How many valence electrons does Neon have?

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4 VE

How many valence electrons does carbon have?

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3 VE

How many valence electrons does Boron have?

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7 neutrons

How many neutrons does Nitrogen have?

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4 neutrons

How many neutrons does Lithium have?

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Mo/ Molybdenum

Which element is located in group 6, period 5(use periodic table)

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O/Oxygen

Which element is located in group 16, period 2 (use periodic table)

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K/ potassium

Which element is located in group 1, period 4 (use periodic table)

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Ni/Nickel

Which element is located in group 10, period 4 (use periodic table)

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B/ Boron

Which element is located in group 13, period 2 (use periodic table)

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alkali metals

the most reactive metals in the periodic table

<p>the most reactive metals in the periodic table</p>
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Halogens

Most reactive nonmetals

<p>Most reactive nonmetals</p>
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noble gases

The most stable group on the periodic table

<p>The most stable group on the periodic table</p>
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inner transition metals

elements that appear below the main body of the periodic table. Also referred to as the f block

<p>elements that appear below the main body of the periodic table. Also referred to as the f block</p>
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Lanthanides

the 14 elements with atomic numbers from 58 (cerium, Ce) to 71 (lutetium, Lu)

<p>the 14 elements with atomic numbers from 58 (cerium, Ce) to 71 (lutetium, Lu)</p>
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Actinides

the 14 elements with atomic numbers from 90 (thorium, Th) to 103 (lawrencium, Lr)

<p>the 14 elements with atomic numbers from 90 (thorium, Th) to 103 (lawrencium, Lr)</p>
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sublevels

Refers to electron orbitals designated s, p, d or f. These have characteristic shapes which can be used to explain and predict the chemical bonds that atoms can form.

<p>Refers to electron orbitals designated s, p, d or f. These have characteristic shapes which can be used to explain and predict the chemical bonds that atoms can form.</p>
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s,p,d,f blocks

S block: Groups 1&2

P block: Groups 13-18

D block: 3-12

F block: Lanthanide & Actinide series

<p>S block: Groups 1&amp;2</p><p>P block: Groups 13-18</p><p>D block: 3-12</p><p>F block: Lanthanide &amp; Actinide series</p>
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Periodic Trends

specific patterns that are present in the periodic table that illustrate different aspects of a certain element, including its size and its electronic properties

<p>specific patterns that are present in the periodic table that illustrate different aspects of a certain element, including its size and its electronic properties</p>
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ionization energy

The amount of energy required to remove an electron from an atom

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electronegativity

A measure of the ability of an atom in a chemical compound to attract electrons

<p>A measure of the ability of an atom in a chemical compound to attract electrons</p>
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atomic radius

Size of an atom; Specifically: one-half the distance between the nuclei of two atoms of the same element when the atoms are joined

<p>Size of an atom; Specifically: one-half the distance between the nuclei of two atoms of the same element when the atoms are joined</p>
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metallic character trend

based on ionization energy; increases down a group; decreases across a period

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ionization energy trend

decreases down a group, increases across a period

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electronegativity trend

increases across a period, decreases down a group

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atomic radius trend

increases down a group, decreases across a period

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periodic law

the law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements

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bohr model

model of an atom that shows electrons in circular orbits around the nucleus

<p>model of an atom that shows electrons in circular orbits around the nucleus</p>
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ion

An atom or group of atoms that has a positive or negative charge.

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cation

A positively charged ion

<p>A positively charged ion</p>
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anion

A negatively charged ion

<p>A negatively charged ion</p>
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semi-conductor

Another name for metalloid

<p>Another name for metalloid</p>
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Henry Moseley

Arranged the periodic table by atomic number instead of mass number

<p>Arranged the periodic table by atomic number instead of mass number</p>
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Dimitri Mendeleev (1869)

Developed the first periodic table of elements, organized by atomic mass

<p>Developed the first periodic table of elements, organized by atomic mass</p>
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shielding

inner level electrons block attraction from the nucleus

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nuclear charge

number of protons in the nucleus