Atom/Mixture
It is an electron in the outer shell associated with an atom, and that can participate in the formation of bonding
Valance electron
Is a lasting attraction between atoms, ions, or molecules that enables the formation of chemical compounds.
Chemical bond
This force of attraction exists between the shared electrons and the positive nucleus.
Covalent bond
It is the proportionality factor that relates the number of constituent particles (usually molecules, atoms, or ions) in a sample with the amount of substance in that sample. Its SI unit is the reciprocal mole, and it is defined exactly as No = 6.02214076×1023 mol−1
Avogadro number
Any atom or molecule with a net charge, either positive or negative, is known as an ___
ion
The process in which solid particles in a liquid or gaseous fluid are removed by the use of a filter medium that permits the fluid to pass through but retains the solid particles
Filtration
Name the compound below:
AlPO4
Aluminum phosphate
It is a type of chemical bonding that arises from the electrostatic attractive force between conduction electrons (in the form of an electron cloud of delocalized electrons) and positively charged metal ions.
Metallic bond
Balance chemical reaction :
Fe + HCl------>FeCl2 + H2
Fe + 2HCl------>FeCl2 + H2
I am God
I am Planet
I am element
Mercury
Technique for separating dissolved chemical substances by taking advantage of their different rates of migration across sheets of paper
Chromatography
Made from billions of carbon atoms
Each carbon forms a covalent bond with 4 carbon atom
All bonds are strong bonds
Properties
The hardest substance
uHigh melting point(3550 degrees)
Poor conductor
Diamond
Name the compound below :
N2O5
Dinitrogen pentaoxide
Calculate the number of particles for 112 grams of Calcium oxide (CaO).
12.04x1023
An ion has 16 electrons and carries a -2 charge. What is the number of electrons in this ion?
18 electrons
Write the electron configuration for the Sulfide ion?
2+8+8
What is the formula for Aluminum hydroxide
Al(OH)3
What is the formula for tetra phosphorus hexaoxide?
P4O6
What is the mole ratio for the reaction below(Balance as needed) :
K +H2O----->KOH + H2
2K +2H2O----->2KOH + H2
2:2:2:1
-Each carbon bonded to three other carbons, with the 4th electron delocalized; can conduct electricity
-Hexagonal layers
-Strong covalent bonds within layers so high melting point
-Weak forces between layers so they slide over each other
-Low density as layers are far apart
-Insoluble
Graphite
How do separate sand and sugar mixtures?(all stages)
Mix with water
Filtrate
Evaporation
Draw formation of bonding in Aluminum nitride
---
Draw formation of bonding in Water
----
Calculate the number of particles in 980 grams of phosphoric acid .(H3PO4)
60.2x1023
or
6.02x1024
Balance the chemical equation below :
Al +HCl------>AlCl3 + H2
2Al +6HCl------>2AlCl3 + 3H2