bonding structure and the properties of matter Flashcards
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properties of an ionic bond
-particles that are oppositely charged ions
-between metals and non-metals
properties of a covalent bond
-particles are atoms which share pairs of electrons
-mostly non metallic elements
-between non metals and non metals
properties of a metallic bond
-particles are atoms which share delocalised electrons
-in metal elements and alloys
what does and ionic bond include
transfer of electrons in the outer shells
what happens when ionic bonds transfer electrons
-metals lose electrons to become positively charged ions
-nonmetals gain electrons to become negatively charged ions
the elements in group 1 do
they react with the elements in group 7
when group 1 elements react with group 7 elements
group 1 elements can lose one elctron,which can be given to an atom from group 7 to both achieve electrons shell stability
what is the elctrostatic attraction between oppositly charged Na(+) and Cl(-) ions called
ionic bonding
what does the charge produced by metals in groups 1 and 2 relate to
group number of the element in the periodic table e.g h2+ ions relate to group 2
what is an ionic compound
a giant structure of ions held together by strong electrostatic forces between oppositely charged ions(ionic bonding)
empirical formula is….
the simplest ratio of atoms or ions e.g 1:1= NaCl
when atoms share pairs of electrons…..
they form covalent bonds(strong bonds)
how to derive molecular formula of a substance
counting the number of atoms
what are polymers examples of
very large covalent molecules
2 examples of covalently bonded substances with giant covalent structures
diamond and silicon dioxide
