Atomic Structure
Flashcard
•
Science
•
6th - 8th Grade
•
Hard
Barbara White
FREE Resource
Student preview
30 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Metallic Bonding Noun
[meh-tal-ik bon-ding]
Back
Metallic Bonding
The electrostatic attraction between a lattice of positive metal ions and the surrounding sea of delocalized valence electrons.
Example: This diagram shows how metal atoms form a lattice of positive ions held together by a 'sea' of shared, delocalized electrons that can move freely.
2.
FLASHCARD QUESTION
Front
Metal Lattice Noun
[met-l lat-is]
Back
Metal Lattice
A regular, repeating three-dimensional arrangement of positive metal ions held together by a sea of delocalized electrons.
Example: This diagram shows a metal lattice, where positive metal ions (cations) are held in a fixed, orderly structure by a 'sea' of free-moving electrons.
3.
FLASHCARD QUESTION
Front
Valence Electrons Noun
[vay-lents ee-lek-trons]
Back
Valence Electrons
The electrons located in the outermost energy shell of an atom that are involved in forming chemical bonds.
Example: This Bohr model of a Sodium atom shows electrons in shells. The single electron in the outermost shell is the valence electron.
4.
FLASHCARD QUESTION
Front
Metallurgy Noun
[met-l-ur-jee]
Back
Metallurgy
The science and technology focused on extracting metals from ores, refining them, and preparing them for practical use.
Example: Metallurgy involves extracting metals from their ore. This diagram shows a furnace where ore and charcoal are heated to separate the metal.
5.
FLASHCARD QUESTION
Front
Ore Noun
[or]
Back
Ore
A naturally occurring solid material from which a metal or valuable mineral can be extracted for profit.
Example: This image shows various sulphide minerals, like Galena (PbS), which are often mined as ores to extract valuable metals like lead (Pb).
6.
FLASHCARD QUESTION
Front
Alloy Noun
[al-oi]
Back
Alloy
A mixture containing two or more elements, where at least one is a metal, possessing characteristic metallic properties.
Example: This image shows a book about alloys but does not visually explain the concept. An alloy is a mixture of metals, or a metal combined with other elements, at an atomic level.
7.
FLASHCARD QUESTION
Front
Karat Noun
[kar-at]
Back
Karat
A unit of measurement for the purity of gold, where 24 karats signifies 100% pure gold.
Example: Karat (K) measures gold purity. An alloy like 18K gold is a solid mixture of gold atoms and other metal atoms, shown as a ratio.
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