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Chemistry Map - Coggle Diagram
Chemistry Map
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Ionic Bonding
Ionic Bonding is between a metal and a non metal and forms ions, all metals are positive and non metals are negative.
Covalent bonding
Covalent bonding is between 2 nonmetals where they share their electrons instead of giving them away and or taking them.
Metallic Bonding
Metallic bonding is between 2 metals and creates alloys and creates a lattice with delocalized ions they are in neat rows that allow the metals to slide across.
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Atomic Structure
An atom is formed by subatomic particles like the proton and neutron which make up the nucleus which has a positive charge, and electrons orbit the nucleus on the electron shells and have a negative charge.
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Acids and Alkalis
pH 1-6 which are below 7 are all acidic, pH 8-14 which is above 7 are all alkali
It is possible to indicate the pH of a substance using an universal indicator which changes the liquid into a colour depending on the pH or one can use phenophatlaien
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Periodic table
Atomic Number
Atomic Number is the smaller number on the periodic table and represents the number of protons in an element.
Atomic Mass
Atomic mass is the larger number on the periodic table and represents the total Relative Atomic Mass of Neutrons and Protons.
Group 1
Otherwise knowns as alkali metals, the trend going down is that the melting point decreases but the reactivity goes up.
Mendeleev wrote the names of elements onto cards to help him look for patterns. He put the cards in order of lightest to the heaviest element and made groups based on the chemical and physical properties of each element.
Mendeleev recognised that not all elements had been discovered yet. He left gaps in his table to place elements that scientists didn't yet know.
By looking at the physical properties and chemical properties of elements next to gaps, he could even predict the properties of these undiscovered elements
Group 2
Otherwise known as alkaline-earth metals, the trend is similar to group 1 but it is less reactive and has higher melting points.
Group 7
Otherwise known as halogens, the trend is the reactivity is highest at the top but the melting point increases as you go down.
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