Zusammenfassung der Ressource
Chemistry
- Chemical Changes and Structure
- Atomic Structure
- Proton- Location=nucleus, Mass=1, Charge=+1
- Neutron- Location=nucleus, Mass=1, Charge=0
- Electron- Location=shell, Mass=almost 0, Charge=-1
- Mass Number= Protons+Neutrons
- Electron Arrangement
- First Orbital can hold ONLY 2 electrons
- Second Orbital can hold ONLY 8 electrons
- Third Orbital can hold ONLY 8 electrons
- Bonding and Properties
- Atoms from bond to acheive chemical stability
- 3 types of bonding: Covalent, Ionic and Metallic
- A Covalent Bond is when two non-metal atoms join together and share electrons
- Acids and Bases
- The pH scale
- 1-6 is stronger acids
- 8-14 is stronger alkalis
- 7 is neutral solution
- Ionic Formulae
- Ionic formulae shows the charges on ions
present in ionic compounds. It can be
written for compounds containing metals
and non-metals and non-metals and
ammonium compounds.
- Concentration and the Mole