Atoms
What are the three subatomic particles?
Proton
Neutron
Electron
What method would you use to separate sand from water?
Filtration
What are the three types of bonding?
Ionic
Covalent
Metallic
In an exothermic reaction energy is _____________
released
What is the meaning of the state symbol (aq)
Aqueous solution
What is the relative mass of a proton
1
What changes of state occur during distillation?
Evaporation
Condensation
In a covalent bond the electrons are ____________
Shared
What pH would an acid show?
0-6
What is the name of the positive ion?
Cation
What is the charge of an electron?
Negative
What is a pure substance?
A substance containing only one type of element or compound
Ionic bonds are held together by strong ________________ forces
Electrostatic
Name the type of reaction when an acid reacts with an alkali
Neutralisation
Anion
Who came up with the plum pudding model?
JJ Thompson
What are the names of the two phases in chromatography?
Mobile
Stationary
Which allotrope of carbon has the highest melting point?
Diamond
Define activation energy
the minimum amount of energy required to start a reaction
What three components are required for electrolysis to work?
Electrodes
Electrolyte
Electricity / power supply
What is an ion?
An electrically charged particle
What is the equation used to calculate Rf value?
Rf = distance moved by substance
distance moved by solvent
How does a lithium ion form an atom?
It loses an electron
24 g of magnesium reacts with oxygen to make 40 g of magnesium oxide.
How much oxygen is used in the reaction?
16g
In a solution of CuSO4 what products would be made during electrolysis?
Copper
Oxygen