metallic bond
Metal atoms have ___ number of valence electrons
small
Ho can we describe hexagonal closest packing atoms?
atoms are arranged at the edges and the center of the hexagonal prism, and THREE atoms—in the MIDDLE of the prism.
Metals are __, can be drawn into __ and can be hammered into ___ easily
Shiny,wires,shape
BCC is prism/cubic
Cubic.
meaning of "ductile"
иілімді/пластичный
Electrons that can move freely between atoms form an ____
"electron sea"
During a chemical reaction, (metals) they often act as ___ agents and donate electrons to other reactants in order to obtain a full outermost shell.
reducing
In what kind of element element the metallic bonding is the strongest and weakest?
In Aluminum(Al) is the strongest, and the weakest in Sodium(Na)
What is the difference between metals and nonmetals?
Metals tend to be shiny, are solid at room temperature (apart from mercury), are malleable, ductile and have a high melting and boiling point. On the other hand, non-metals are dull and do not reflect light, their states at room temperature vary, they are brittle and have relatively low melting and boiling points.
electron sea?
электрон газы/электронный газ
Metals more likely to ___ electrons to ___ more stable electron arragement
lose, achieve
Where is Magnesium used?
HCP(Hexagonal closest packing)
What makes easy for metals to be shaped and drawn into wires?
The free movement electrons
What's the melting point of iron(in C°)?
1538°C
meaning of "filaments"
Жіптер/нити.
Strength of the metallic bond ___ with some valence electrons that can contribute to electron sea.
increases
Following chemical properties are general of metals: 1_ 2_ 3_
1.React with oxygen 2.Active metals react with water 3.React with acids
___ element is a ductile and excellent conductor of electricity.It has red-orange metallic luster and is used for wire production
Copper(Cu)
Where are chromium and zinc used?
In HCP
crystal lattice means
кристалдық тор/кристаллическая решетка
There are 3 main types of lattices or crystal structures:
body-centered cubic(bcc), face-centered cubic(fcc) and hexagonal closest packing (hcp).
Name elements that are used as fcc lattice(6)
Ni, Ag, Au, Pd, Pt, Cu, etc.
Tell me an example of reduction process(written in book)
Na—> Na + e | Mg—> Mg² + 2e
Determine the types of crystal lattices for following metals: Au,K, Na and Ca
Au is FCC, K and Na are BCC amd Ca is HCP
Gold is __ metal
malleable