Chemistry (Combined Science) · GCSE · AQA · AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Foundation · Specification point · 5.1.1.4 · Atomic structure and the periodic table · A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes
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5.1.1.4 Relative electrical charges of subatomic particles
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The relative electrical charges of the particles in atoms are:
In an atom, the number of electrons is equal to the number of protons in the nucleus. Atoms have no overall electrical charge. The number of protons in an atom of an element is its atomic number. All atoms of a particular element have the same number of protons. Atoms of different elements have different numbers of protons. | |||||||||
Students should be able to use the nuclear model to describe atoms. | WS 1.2 |