electrolysis
periodic table
bonding
carbon alletropes
atomic structure
100
what is electrolysis
the process of using electricity to break down an ionic compound (electrolyte) that is molten or dissolved in solution
100
how did Mendeleev arrange the periodic table?
by atomic mass
100
what are the 3 types of bonding, and what are they?
Ionic- electrostatic force between oppositely charged ions
Covalent- electrostatic forces of attraction between nuclei and the shared pair of electrons
Metallic- electrostatic forces of attraction between cations and delocalised electrons
100
What is an allotrope?
a different structural form of the same element in the physical state
100
who created the current model of the atom
Niels Bohr
200
What is an electrolyte?
an ionic compound that can conduct electricity when molten or dissolved in water so that the electrons can be free
200
what is the horizontal section of a periodic table called?
period
200
what is the bond between for each type of bond
Ionic- metal and non metal
Covalent- non metal and non metal
Metalic- metal and metal
200
What are the properties of diamond
4 bonds, hard, cannot conduct electricity and high boiling and melting point
200
what were James DAltons ideas around the periodic table
he thought all matter was made of tiny particles.
- atoms cannot be broken down into anything simpler
-atoms of a given element are identical to eachother
- during chemical reactions they rearrange to make other elemts
300
which electrode is negative and positive
the cathode is positive, and the anode is negative
300
what are the vertical sections in a periodic table called?
groups
300
what are the boiling points like for each one
ionic- low melting and boiling point
covalent- low melting and boiling point
metallic- high melting and boiling point
300
what are the properties of graphite?
3 bonds, high melting and boiling point, layers slide and it can conduct
300
what did JJ Thomson find out
Plum pudding model- a ball of positive charge with negatve electrons embeded
400
why does it happen
because an electric current passes through an electrolyte (a molten or dissolved ionic compound), causing it to break down into its constituent elements
400
how is the period table now arranged
in order of atomic number
400
which types of bonding can conduct
metallic and ionic ( when aqueous or molton)
400
what are the properties of graphene
the same as graphite its a layer of it
400
What did Ernest Rutherford discover with his experiment.
He conducted the gold foil experiment, in this he fired positively charged alpha particles. Most particles go straight through the foil. But a few were scattered in different directions.
- the mass is concentrated in the nucleus
- the nucleus is positively charged
500
Explain why ionic compounds must be molten or in solution for electrolysis to occur.
so their ions can move freely to conduct electricity and participate in electrolysis
500
!!DOUBLE POINTS!!
Is this Mendeleev....
no. haha no doule points for you >:3
or in the case you got it right congrats.... i guess...
500
what type of bonding is this
metallic
500
what are the properties of the buck minister fullerene ball
low melting and boiling points, low electrical and thermal conductivity
500
idk what to put here so who is my favourite singer
