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9 - Mod 3 Lesson 1

QuestionAnswer
Atoms smallest unit of matter
Elements one type of atom
Nucleus the center of an atom, formed by protons and neutrons
Subatomic particles Particles found within the atom, mainly protons, neutrons, and electrons.
Protons positively charged particles
Neutrons electrically neutral particles, which means they have no charge
Isotopes atoms of the same element that have a different number of neutrons
Electron negatively charged particles with almost no mass
Atomic number the number of protons an atom contains
Atomic mass the average mass of a typical atom of that element
Ion a charged atom
neutral What is the charge of a neutron?
positive What is the charge of a proton?
negative What is the charge of an electron?
net charge positive What is the charge of the nucleus?
protons + neutrons How do you find the atomic mass?
same as atomic number How do you find the number of protons?
atomic mass - atomic number How do you find the number of neutrons?
same as protons in a neutral atom How do you find the number of electrons?
inside the nucleus Where are protons and neutrons located?
electron cloud Where are electrons located?
Created by: Ms. Greenup
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