Higher pressure raises boiling point, so water can reach temperatures above 100°C, cooking food faster. At high altitudes, pressure cooker compensates for lower atmospheric pressure.
Explanation:
Atomic number Z = number of protons. Mass number A = protons + neutrons. So neutrons = A - Z. Electrons = Z in neutral atom. Isotopes same Z, different N.
Explanation:
Neutron is neutral (charge 0). Proton +e, electron -e. Alpha particle +2e. Neutron mass slightly more than proton. Discovered by Chadwick.
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