Chemistry Atomic Structure

 

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  All substances are made of tiny particles of matter called atoms which are the building blocks of all matter

• Each atom is made of subatomic particles called protons, neutrons, and electrons

• The protons and neutrons are located at the centre of the atom, which is called the nucleus

• The electrons move very fast around the nucleus in orbital paths called shells

• The mass of the electron is negligible, hence the mass of an atom is contained within the nucleus where the protons and neutrons are located

Chemistry Metallic Bonding

 

Metal atoms are held together strongly by metallic bonding in a giant metallic lattice

Within the metallic lattice, the atoms lose the electrons from their outer shell and become positively charged ions

The outer electrons no longer belong to a particular metal atom and are said to be delocalised

They move freely between the positive metal ions like a 'sea of electrons'

Metallic bonds are strong and are a result of the electrostatic attraction between the positive metal ions and the negatively charged delocalised electrons

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What is the main study of physics

The definition of physics is the study of the physical plane of matter, motion, force, and energy. The root word of physics is Phys- and is Greek for "nature" and "natural order." Physics itself is studying the natural world and the interactions between objects and energy in any given environment.

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