C2.1 Structure And Bonding Flashcards
Define element
They’re on the periodic table and are made up of only one type of atom
Define compound
Two or more elements that have been chemically bonded
Define mixture
Two or more elements or compounds that are not chemically bonded and can be separated
Define ion
A charged particle produced by the loss or gain of electrons
Define ionic bonding
The electrostatic force of attraction between positively and negatively charged ions - transferring electrons
Ionic bonding is between ………..
Metals and non-metals
What happens during ionic bonding?
A metal reacts with a non-metal and the metal atom gives one or more electrons to the non-metal atom
Both atoms become charged particles called ions
Metal atoms form positively charged ions and non metals form negatively charged ions
Ionically bond sodium chloride
Na (2,8,1)
Cl (2,8,7)
-> Na+ (2,8)
Cl- (2,8,8)
Do more ionic bonds from book (6/6/16)
Correct or not???????
👏🏽👏🏽👏🏽👏🏽👏🏽👏🏽👏🏽👏🏽👏🏽👏🏽🤘🏻🤘🏻🤘🏻🤘🏻🤘🏻🤘🏻😀😀😀
Ionic bonds between the charged particles result in an arrangement of ions called _________
A giant structure or giant lattice
Why are ionic bonds strong?
The force exerted by an ion on the other ions acts equally in all directions
What is the chemical symbol of magnesium chloride?
MgCl2
Covalent bonding is between _________
They _______ electrons.
Two or more non-metals
Share
Practise some covalent bonds (14/6/16)
👊🏽👍🏽👋🏽🙌🏽🤘🏻👏🏽
Define molecule
Two or more atoms joined together by a covalent bond
What happens during metallic bonding?
When metal atoms pack together the electrons in the highest energy level (outer electrons) delocalise and can move freely between atoms. This produces a lattice of positive ions in a ‘sea’ of moving electrons
Why are metallic bonds strong?
The delocalised electrons strongly attract the positive ions and hold the giant structure together
We represent atoms and ions using ________________
Dot and cross diagrams
How are charges of transition metals shown?
With Roman numerals
Eg. Iron (II)
