Chensitry-1 (concepts) Flashcards
Nucleus contains what two things
Protons /neutrons
Protons equal?
electrons
If electrons are removed or added what happens?
Atom becomes charged (+,-)
Becomes an ion
An element has a fixed amount of …… which defines it as being that element
Protons
Same groups have what
Similar properties
2… , …… , ……
2,8,8
Top number on periodic table
Mass # (p+n)
Bottom number
Proton number
Ionic bonding is formed from what two things
Metal + non metals
In ionic bonding, what gains electrons
What does it form
Non metal
Forms negative ion
What loses electrons in ionic bonding
What is formed
Metals
Becomes a positive ion
A covalent bond forms between what compound
Non metals 2x
Water of crystallisation is what
Water integrated into a lattice of salt
What does a water of crystallisation form?
A hydrated salt
Heating a liquid will cause what to surface particles
Surface particles overcome forces of attraction
Leading to evaporation
How easily a liquid evaporates is called what
Volatility
Solution
Mixture of a solute and a solvent
Solute
Substance being dissolved
Solvent
The liquid
Solubility
A measure of how much will dissolve
Bonds in the …. which hold the ions/molecules together break, causing …. to mix with the liquid forming a solution
Solvent
Solute
Why is something not soluble
The attraction of the different molecules isn’t as strong as the attraction between the same molecules
*more attracted to themselves than eachother
Alcohols and esters can be used as what
Solvents
