What is the best way to classify a chemical substance
Background information
What is the properties of chemical substances?
What is a chemical substance?
What does chemical bonding means?
The factors that helps classify
Boiling and Melting point
Conductivity
Shape
Risk assessment
Classify
Precautions:
List of risk:
Covalent molecules
Covalent networks
Metallic lattices
Ionic lattices
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.
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 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.
The metal lattice is an arrangement method of ions, in which there are two kinds of metals or more bonding together.
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 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.
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.
conduct
not conduct
high
low
Covalent network
Metallic lattice
Ionic lattice
Covalent molecule
Covalent network
Covalent molecule
Metallic lattice(melted or dissolved)
Ionic lattice
Solid
Metallic lattice
Covalent network
Ionic lattice
Gas or liquid or solid
Covalent molecule
Using bunsen burner
Break the tubes
Burn the tube clip
wearing safety glasses and clothes
use the tube clip
use out flame to heat
disposal
turn on the safety flame when we don't use it
If it really happens, tell the teacher first and calm down