Sagot :
Answer:
Atom, smallest unit into which matter can be divided without the release of electrically charged particles
Explanation:
Answer:
Atoms are the basic units of matter and the defining structure of elements. ... We now know that atoms are made up of three particles: protons, neutrons and electrons — which are composed of even smaller particles, such as quarks. Atoms were created after the Big Bang 13.7 billion years ago.
Explanation:
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