Chemistry C1.1- The Fundamental Ideas In Chemistry
This is a series of chemistry unit 1 mind maps.
- Created by: h.b22
- Created on: 09-11-15 17:53
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- C1.1
- Atoms
- Atoms have tiny nucleus surrounded by electrons
- Atoms are represented by a chemical symbol e.g O for Oxygen
- Elements
- Each element is made up of one type of atom
- Elements in the periodic table are arranged in columns called groups
- When elements react their atoms connects with other atoms of other elements
- Compounds are formed when two are more elements are combined together
- Atomic Structures
- Protons have a positive charge
- The nucleus which is at the centre of the atoms contains two type of particles, called protons and neutrons
- Neutrons have no charge
- Electrons have a negative charge
- The Mass number is the total number of particles in the nucleus of an atom. So it is the number of protons + number of neutrons
- Elements are arranged in order of their atomic number
- Electrons in Atoms
- Elements in the same group in the periodic table have the same number of electrons
- Each electron is a atmos energy level
- The lower the number on the outer shell, the more reactive it is.
- Forming bonds
- When different elements combine they form a compund
- When a metal reacts with a non metal ions are formed
- Metal atoms lose one or more electrons to form a positively charged ions
- Non- Metals atoms gain electrons to form a negatively charged ion.
- When non- metals combine their atoms, share electrons to form a covalent bond and molecules are formed
- The chemical formula of a moleule tells us the number of atoms that have bonded together in the molecule
- Atoms
- Atomic Structures
- Protons have a positive charge
- The nucleus which is at the centre of the atoms contains two type of particles, called protons and neutrons
- Neutrons have no charge
- Electrons have a negative charge
- The Mass number is the total number of particles in the nucleus of an atom. So it is the number of protons + number of neutrons
- Elements are arranged in order of their atomic number
- Electrons in Atoms
- Elements in the same group in the periodic table have the same number of electrons
- Each electron is a atmos energy level
- The lower the number on the outer shell, the more reactive it is.
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