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Chemistry chapter 2

The neutral particle found within an atom is the ? Neutron
The sum of the protons and neutrons in the nucleus of an atom is called the? Mass number
The space around the nucleus where the atom's electrons are found is called the ? Electron cloud
The positively charged central core of an atom is what? Nucleus
A system used to represent the valence electrons around the chemical symbol of an element is the ? Lewis dot structure
The positively charged subatomic particle is an ? proton
The range of all forms of radiant energy is given the name ? Electromagnetic spectrum
The region of space where electrons of a certain energy move about the nucleus of an atom is ? Orbital
The smallest particle of which matter consists is an ? Element
Found in the outer energy level of an atom is what? Atom
The number of protons in the nucleus of an atom of an element is the what of the element? atomic
A negatively charged particle found in all atoms is the ? Electron
Questions Answers
Name and describe the present day model of the atom? The present day model of the atom is called the electron cloud.
What charges do a proton, neutron and electron have? +1, Zero, and -1
Which particles are located in the nucleus? The proton and neutron
Which particle contribute the most to an atom's mass? The proton and neutron.
What is an isotope? Each different version of an element is called an isotope.
What is an ion? When an atom has more electron than protons, or few electrons than protons. It will have a charge, that is an ion.
Can you change the number of protons in an atom and have the same element?
Created by: awais.jat