GCSE Chemistry - Atoms & Ions #1
Cognito・2 minutes read
Atoms are composed of protons, neutrons, and electrons, with most of the atom being empty space. Elements on the periodic table show the atomic number and mass number, with atoms capable of becoming ions by gaining or losing electrons.
Insights
- Atoms are composed of a central nucleus containing protons and neutrons, with electrons orbiting around them in shells, resembling a miniature solar system with mostly empty space.
- Atoms can transform into ions by acquiring or losing electrons, altering their charge; the periodic table organizes elements based on their atomic number (protons) and mass number (neutrons and protons), providing a structured overview of the fundamental building blocks of matter.
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Recent questions
What are atoms made of?
Protons, neutrons, electrons.
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Summary
00:00
"Atoms: Building Blocks of Matter and Ions"
- Atoms are the building blocks of everything, consisting of a central nucleus made up of protons and neutrons, surrounded by electrons in shells.
- Protons and neutrons in the nucleus have a relative mass of one, while electrons are much smaller with a mass 2000 times smaller and a negative charge.
- The size of an atom is around 0.1 nanometers, with most of it being empty space, similar to a solar system with a tiny nucleus and orbiting electrons.
- Atoms can become ions by losing or gaining electrons, changing their charge; the periodic table displays elements with nuclear symbols indicating the atomic number (protons) and mass number (neutrons and protons).
