2306216
Description
Mind Map by abiithomas1, updated more than 1 year ago
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Created by abiithomas1
almost 11 years ago
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Atoms
- All substances are made of atoms.
- A substance that is made of only one sort of atom is called an element
- A substance that is made of only one sort of atom is called an element
- The periodic table has groups that contain elements with similar properties
- atoms have a small central nucleus, made up of protons and neutrons and around which there are electrons
- Proton +1
- Neutron 0
- Electron -1
- Electron -1
- Neutron 0
- In an atom, the number of electrons is equal to the number of protons in the nucleus.
- Atoms have no overall electrical charge.
- Atoms have no overall electrical charge.
- Atomic number= the number of protons in an atom
- Mass number= sum of protons& neutrons
- Mass number= sum of protons& neutrons
- All atoms of a particular element have the same number of protons. All atoms of different elements have different numbers of protons.
- Atoms of the same element can have different numbers of neutrons;
- these atoms are called isotopes of that element.
- these atoms are called isotopes of that element.
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