August: concepts of chemistry
Chemistry: Is a Science that studies the relationship of the changes between matter and energy.
Sciences related:* Physics
Matter: everything that has mass and occupies a volume.
Density: is defined like the relation of mass over volume.
D=Density(Kg\m³) M=Mass(Kg) V=Volume(cm³)
D=M\V M=D x V V= M\D
Atom: Smallest part of a given kind of matter.
Molecule: Arrangement of Atoms.
Atomic Model: Representation of the single atom.
Element:Substance made of only one kind of atoms.
Compound: Substance made of only one kind of atoms.
Mixture: Two or more substances that are in the same phase, and form a new compound.
HomogeneousMixture: It is a mixture in which you can’t distinguish components.
Heterogeneous Mixture: It is a mixture in which you can distinguish components.
Elements: Gold, Silver , Copper
Compounds:Lemonade, Milk, Salt Water
Homogeneous: Blood, Tears, Saliva
Heterogeneous: Pizza, Salad, Oil+waterAtomic Model:
Methods of separation of mixtures
Periodic Table History:
1s 2s2p 3s 3p 4s 3d
NE 10 | I I | II | II | II | II | | | | | | | | | | | 1S²2S²2P6 |
LI 3 | II | I | | | | | || | | | | | | | 1S² 2S1 |
NA 11 | II | II | II | II | II | I | | | | | | | | | | 1S²2S²2P6 3S1 |
F 9 | II | II | II | II | I | | | | | | | | | | | 1S²2S²2P5 |