chemistry

Created by

oliver bennett

Cards (55)

what is a covalent bond?
A chemical bond formed when electrons are shared between two atoms.
what is an ion?
IONS are atoms that have LOST OR GAINED ELECTRONS and have a CHARGE.
how do ions form
Ions form when electrons are TRANSFERRED between atoms to achieve a FULL OUTER SHELL. This makes them MORE STABLE.
what is a compound
A pure substance made from more than one type of element chemically bonded together
what is a mixture  
contains two or more substances not chemically combined together
covalent bonding occurs between non-metals
in a dot and cross diagram you only need to show the outershell
to represent atoms sharing electrons,the dot and cross diagrams have overlapping shells. kind-of like a venn diagram
what is a proton
a subatomic particle.with a positive electric charge
Where can a proton be found  
in the nucli
what is an atom 
a single particle that is the basic builidng blocks for all matter in the universe
what is a neutron  
a particle that has no charge
where is the neutron found
In the nucli
what is an electron
A negitively charged particle
where is an electron found
spinning around the outside of the shell
what is an element  
a substance consisting of atoms that all have the same number of protons
atomic number  
the number of protons in an atom
how do we calculate the number on neutrons
mass number-number of protons
what charge does a proton have  
+1
what charge does a neutron have  
0
what charge does an electron have
-1
what is energy
the ability to do work
energy can not be created or destroyed
energy dissipates into the surroundings
what is kinetic energy
the energy an object has because of its motion
what is chemical energy
anything that can be burnt for energy
what is thermal energy
the transfer happens when there is a difference in temperature
what is GPE
the energy an object has because of its height above a certain point
what is nuclear energy
a form of energy released from the nucleus
what is electrostatic energy
The energy stored when repelling charges have been moved closer together.
what is an example of thermal energy  
a hot drink
what is an example of chemical energy 
battery
what is an example of electrostatic energy  
friction in hair
what is elastic energy  
when objects are stretched or squashed
what is an example of elastic energy 
a rubber band
what is an example of electron magnetic energy 
a magnet
what is an example of kinetic energy
a car
what another way to say gravitational potential energy  
G.P.E
what is the most wasted form of energy  
thermal energy
how do we calculate kinetic energy
kinetic energy = 1/2 x mass x speed^2