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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
how do you classify a chemical substance?
Identifying properties
Melting and boiling point
A test to see the boiling and melting points of a substance, mainly over a flame in a small metal pan
Flame test
Solubility test
Conductivity test
Metal Reactivity
Hammer test
A test to see the durability of a substance when its hit with a hammer or force
determines the reactivity of a metal in hydrochloric acid
A test to see if the substance can conduct electricity
A test to see if a substance can dissolve in water
A test to see if its flammable, and a way to identify metals
What is a chemical substance?
Single elements cannot be broken down by reactions
Compounds can be made of at least 2 molecules
Ionic compounds are made of a non metal and a metal mollecule
Metallic compounds are made exclusively of metallic molecules
Covalent compounds are made exclusively of non metal molecules
Identifying properies
Metallic:
malleable, lustre, ductile
Ionic:
conductive as liquid, soluble, brittle, high melting and boiling point
Covalent molecule
Covalent network
non conductive, hard, high melting and boiling point
non conductive, soft, low melting and boiling point
What does each property mean?
Conductivity
the ability to allow heat and electricity through it
Malleability
solubility
flammability
how long it takes for a substance to catch on fire or combust, if possible.
the ability to dissolve into another substance, often water
the quality to change forms without breaking to compression
melting and boiling point
the temperature at which a solid goes to a liquid, or a liquid to a gas
ductility
lustre
the shinyness or a substances ability to reflect light
the ability to change forms without breaking from tensile pressure