Atomic Structure

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What is an atom made up of?
An atom is made up of protons,electrons and neutrons.
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Where are the different parts of the atom?
The nucleus containing the protons and neutrons is surrounded by the electrons in the atom.
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What is an isotope?
An isotope is an atom with the same number of protons but a different number of neutrons.
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What is the 'plum pudding model?'
The plum pudding model was an early,incorrect model of an atom,it was disapproved by Rutherford's scattering experiment and replaced with a nuclear model.
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What is a nuclear model?
A nuclear model is the scientific idea that an atom has electrons surrounding a nucleus containing protons and neutrons.
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State the three sub-atomic particles.
The three sub-atomic particles are protons,neutrons and electrons.
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What is the relative mass of protons,neutrons and electrons?
Relative mass: protons = 1,neutrons = 1,electrons = almost zero.
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What is the relative charge of protons,neutrons and electrons?
Relative charge:protons = +1,neutrons = 0,electrons = -1
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Do the number of neutrons in an atom equal the number of protons?
NO! The number of protons in an atom is equal to the number of electrons.This means that the atom is electrically neutral overall.
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What happens when a atom looses or gains an electron?
When an atom looses or gains an electron is becomes a charged particle this is an ion.
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What happens if the atom looses one or more electrons?
If an atom looses one or more electrons it becomes a positively charged ion.
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What happens if the atom gains one or more electrons?
If an atom gains one or more electrons it becomes a negatively charged ion.
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What is the number of protons in a nucleus of an atom called?
The number of protons in a nucleus of an atom is called the atomic number.
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Do the atoms of a particular element all have the same number of protons?
Yes the number of protons between different particular elements are all the same.
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Do the atoms of different elements have a different number of protons?
Yes different elements have a different number of protons from one another.
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Whats is the mass number?
The total number of protons and neutrons.
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In a chemical symbol where is the proton number shown?
The proton number is shown below the chemical symbol.
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Where is the mass number shown in a chemical symbol?
The mass number in a chemical symbol is shown at the top.
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How do you find out the number of neutrons in an element from the chemical symbol?
To find the number of neutrons in an elements from the chemical symbol is by subtracting the proton number from the mass number.(i.e Cl35 has 17 protons,the number of neutrons is 35 (the mass number) - 17(the proton number)=18 so there is 18neutron.
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Does an isotope of an element have the same mass number as the original element?
No the mass number of an isotope is different to the original element.
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In the plum pudding model of an atom what where the plums?
The plums in the plum pudding model where the electrons.
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Which type of radiation was used in the Rutherford scattering experiment?
Alpha radiation was used in the Rutherford scattering experiment.
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Compared to the whole atom the nucleus is..
Much smaller compared to the rest of the atom but it is the heaviest part.
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Other cards in this set

Card 2

Front

Where are the different parts of the atom?

Back

The nucleus containing the protons and neutrons is surrounded by the electrons in the atom.

Card 3

Front

What is an isotope?

Back

Preview of the front of card 3

Card 4

Front

What is the 'plum pudding model?'

Back

Preview of the front of card 4

Card 5

Front

What is a nuclear model?

Back

Preview of the front of card 5
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