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- 1Structure of an atomAtoms consist of electrons that surround a nucleus that contains protons and neutrons - neutrons are neutral but protons are positively charged and electrons are negatively charged. The amount of protons in an atom is called its atomic number.
- 2ElementsAn element is a pure substance that contains only one type of atom.
- 3CompoundsIn a compound, the atoms of one element are bonded very tightly to the atoms of another element or elements. The elements in a compound are very different from the
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- Fichas sobre Sin título, creado por Sofie Millington el 20/11/2017.
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- Sofie Millington
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