bonding and structure Flashcards
what can speed up a reaction
- using a catalyst
-increasing temperature
-increasing concentration
-decreasing particle size
a reaction can be tracked by
-measuring mass loss
-measuring volume
-measuring gas produced
average rate of reaction
change in quantity/change in time
graphs
steeper gradients faster reaction
reaction is finished when the line is leveled off
why is an atom neutral
An atom is neutral because there is the same amount of protons (+) as there are electrons (-).
the electron shells
1st Only has 2
2nd has up to 8
3rd 8
protons
located in the nucleus. + charge, 1
neutrons
located in the nucleus, nuetral charge, mass of 1 amu
electrons
electron shells, negatively charged, weighs almost 0
the mass of an atom
comes from the protons and neutrons
Relative atomic mass
nuclei
isotope
same atomic number with different mass number
what is a diatomic molecule
a molecule that contains two atoms
bonds between molecules
weak
ions are
particle with a charge
metals form
positive ions