Chemistry Vocab Flashcards

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1
Q

Single Bond

A

Straight bond involving 2 atoms and 2 electrons (one from each). All single bonds are straight bonds

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2
Q

Double Bond

A

Involve 2 atoms and 4 electrons. Curved bond

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3
Q

Triple Bond

A

Involve to 2 atoms and 6 electrons. Curved Bond. Only Nitrogen, Carbon, and Boron can form this bond.

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4
Q

Coefficient

A

It’s the number in front of a formula that tells you how many molecules of a formula there are.

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5
Q

Subscript

A

The number of atoms of an element in a formula. It’s a smaller number that goes down and to the right.

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6
Q

Noble Gases

A

Last group in the periodic table, odorless and colorless

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7
Q

Halogens

A

Group 7a on periodic table, highly reactive elements

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8
Q

Alkali Earth metals

A

Group 2a on periodic table, occur in nature, lose 2 valence electrons in bonding.

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9
Q

Alkali Metals

A

A highly reactive element. Ex: Lithium, Sodium, potassium, and rubidium

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10
Q

States of Matter

A

Solid (Something tangible that doesn’t take shape of it’s container), Liquid (Takes shape of it’s container), Gas (intangible and takes shape of its container).

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11
Q

Atom

A

Matter Building blocks. Protons, Neutrons, and electrons.

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12
Q

Element

A

Pure substance, have the same atomic number and protons.

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13
Q

Nucleus

A

The center of an atom, protons and neutrons are inside.

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14
Q

Proton

A

Positively charged particles

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15
Q

Electron

A

Negatively charged particles

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16
Q

Neutron

A

Neutrally charged particles

17
Q

Atomic Number

A

How many protons an element has and the top number on an element in the periodic table

18
Q

Atomic Mass

A

Approx. how much one atom of an element weighs, bottom number on the periodic table

19
Q

Atomic Symbol

A

Symbol of an element, first letter capital second lower case

20
Q

Electron Shell/Cloud

A

The outside electron ring in an atom

21
Q

Valence Electron

A

The electrons on the outer most shell of an atom.

22
Q

Dmitri Mendeleev

A

He ordered the elements on the periodic table by their masses

23
Q

Groups

A

Columns in a periodic table

24
Q

Periods

A

Rows in a periodic table

25
Q

Kinetic Theory

A

Explains how objects change forms of matter

26
Q

Ionic Bond

A

Oppositely charged ions attracted to each other, Usually between a metal and non metal.

27
Q

Covalent Bond

A

Sharing of electrons between a non metal and a non metal

28
Q

Element Symbol

A

Symbol of an element on the periodic table

29
Q

Lewis Dot Structure

A

Showing how many valence electrons an element has with a dot diagram. 1 dot for each element

30
Q

Bohr Model

A

Shows the atomic mass, number, etc. like the periodic table

31
Q

Orbital

A

Each section that the atoms go in