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What is the best way to classify a chemical substance - Coggle Diagram
What is the best way to classify a chemical substance
Background information
What is the properties of chemical substances?
The definition of a chemical property is a specific characteristic of a substance like an element or a compound, relating to how it can change as a result of a reaction. These properties are inherent to its chemical identity, a result of bonds and other characteristics of a substance's atomic structure.
What is a chemical substance?
Chemical substances, also known as pure substances or pure substances, are a type of substances with fixed components and specific properties. Chemical substances can be either elements or compounds.
What does chemical bonding means?
Chemical bonds are forces that attract atoms, which can attract atoms or ions. It is caused by the electromagnetic force between two opposite charges
The factors that helps classify
Boiling and Melting point
high
Covalent network
Metallic lattice
Ionic lattice
low
Covalent molecule
Conductivity
conduct
Metallic lattice(melted or dissolved)
Ionic lattice
not conduct
Covalent network
Covalent molecule
Shape
Solid
Metallic lattice
Covalent network
Ionic lattice
Gas or liquid or solid
Covalent molecule
Risk assessment
Precautions:
wearing safety glasses and clothes
use the tube clip
use out flame to heat
turn on the safety flame when we don't use it
List of risk:
Using bunsen burner
Break the tubes
Burn the tube clip
disposal
If it really happens, tell the teacher first and calm down
Classify
Covalent molecules
A covalent bond is a chemical bond. Two or more non-metal atoms jointly use their outer electrons to reach an electron saturation state under ideal circumstances, thereby forming a relatively stable and strong chemical structure.
Covalent networks
Covalent networks is a type of covalent bond. The material it forms is not a particle of molecules, but a large atomic crystal. The connection force of network covalent bonds is very strong. If you want to break the bonds, a lot of energy is required.
Metallic lattices
The metal lattice is an arrangement method of ions, in which there are two kinds of metals or more bonding together.
Ionic lattices
Ionic lattices contain anions and cations with equal charges, and these two ions are arranged alternately, neatly and regularly, often showing a regular geometric shape.