699366
Descrição
Mapa Mental por oliviabaines, atualizado more than 1 year ago
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Criado por oliviabaines
mais de 10 anos atrás
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Atoms and Compounds
- 117 elements
- All substances are made of
atoms
- Atoms consist of a small nucleus surrounded by electrons
- Atoms consist of a small nucleus surrounded by electrons
- when elements react, their atoms join with atoms of
other elements
- Compounds are formed (2 or more elements)
- Compounds are formed (2 or more elements)
- All substances are made of
atoms
- Nucleus contains protons and neutrons(particles)
- Protons have a positive charge and neutrons have no charge
- Atomic number(proton number)- number of protons in
an atom of an element
- Elements arranged in atomic no. in the periodic table
- Elements arranged in atomic no. in the periodic table
- Atomic number also the number of electrons
- Atomic number(proton number)- number of protons in
an atom of an element
- Protons have a positive charge and neutrons have no charge
- Electrons are tiny negatively charged particles
- move around the nucleus
- Number of protons is equal to the number of electrons
- No overall charge
- Charges are equal and opposite(proton+1
electron-1)
- No overall charge
- move around the nucleus
- Mass number- total no. of particles in the
nucleus of an atom
- Number of neutrons + number of protons
- Number of neutrons + number of protons
- Atoms of the unreactive noble gases(group 0) all
have very stable arrangement of electrons
- Electrons are in energy levels that are represented as shells
- the elements in the same group have the same no. of electrons on their outer shell
- Occupy lowest shell first
- the elements in the same group have the same no. of electrons on their outer shell
- Electrons are in energy levels that are represented as shells
- Compounds of metals bonded to non-metals have
ionic bonds
- compounds of non-metals have covalent bonds
- compounds of non-metals have covalent bonds
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