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Most of the mass of the atom is in the nucleus, which contains protons and neutrons

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Most of the mass of the atom is in the nucleus, which contains protons and neutrons

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The number of protons defines which element the atom is, and the number of neutrons defines what isotope it is. The electrons say what charge it has.

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The number of protons defines which element the atom is, and the number of neutrons defines what isotope it is. The electrons say what charge it has.

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Dalton's Atomic theory states that 1)  atom of one element is not the same as an atom of another element 

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Dalton's Atomic theory states that 1)  atom of one element is not the same as an atom of another element 

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2) Atoms can neither be created not destroyed to form other atoms

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Electrons take up most of the volume of an atom

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Electrons take up most of the volume of an atom

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The electron orbitals take up more volume than the nucleus which contains the protons and the neutrons 

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The electron orbitals take up more volume than the nucleus which contains the protons and the neutrons 

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I remember that atoms are made of protons, neutrons and electrons.
They are very very small
They have a nucleus and an electron cloud
Nucleus is made of protons and neutrons
Atoms make up everything

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Atoms are the smallest*** unit of matter. They have a dense nucleus and a diffuse "shell" of electrons, with the nucleus being positive and the electrons being negative.

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Atoms are the smallest*** unit of matter. They have a dense nucleus and a diffuse "shell" of electrons, with the nucleus being positive and the electrons being negative.

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Most of an atom's mass is in its nucleus, which is made of protons and neutrons. The nucleus is surrounded by electron shells/ an electron cloud, which has virtually no mass, but takes up most of the atom's volume.

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most of the volume is empty space, most of the mass is in the nucleus which is made up of protons and neutrons

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most of the volume is empty space, most of the mass is in the nucleus which is made up of protons and neutrons

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Subatomic particles of an atom are the protons, neutrons and electrons 

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Subatomic particles of an atom are the protons, neutrons and electrons 

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The atom consists of protons and neutrons (in the nucleus) and electrons (sorted in shells)

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The atom consists of protons and neutrons (in the nucleus) and electrons (sorted in shells)

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The mass of an atom is concentrated in the nucleus. but, the electron cloud is where most of the volume is found.

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The mass of an atom is concentrated in the nucleus. but, the electron cloud is where most of the volume is found.

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There's a lot of empty space between the nucleus and the electrons

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There's a lot of empty space between the nucleus and the electrons

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Neutrons and protons in the nucleus and electrons in surrounding shells

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Atoms are made up of protons, neutrons, and electrons. In the middle of an atom, there is a nucleus which carries protons and neutrons, making up most of the mass of the atom. Atoms have rings of electrons floating in the space outside of the nucleus.

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Atoms are made up of protons, neutrons, and electrons. In the middle of an atom, there is a nucleus which carries protons and neutrons, making up most of the mass of the atom. Atoms have rings of electrons floating in the space outside of the nucleus.

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protons neutrons in nucleus electrons surround in different orbitals

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protons neutrons in nucleus electrons surround in different orbitals

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electron shells (valence shell has 8 electrons)

electrons take up most of the volume, but protons and neutrons take up most of the mass

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electrons are organized into "shells" levels around the nucleus.

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atoms have electron shells and they have protons and neutrons in the nucleus

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atoms have electron shells and they have protons and neutrons in the nucleus