Podcast
Questions and Answers
If a proton were the size of a football, what would be the approximate size of an electron?
If a proton were the size of a football, what would be the approximate size of an electron?
- A tennis ball
- A grain of sand
- A full stop (correct)
- A marble
Which sub-atomic particle is responsible for the atom's overall neutral charge?
Which sub-atomic particle is responsible for the atom's overall neutral charge?
- Proton
- Neutron (correct)
- Electron
- All of the above
What is the approximate ratio of the radius of an atom to the radius of its nucleus?
What is the approximate ratio of the radius of an atom to the radius of its nucleus?
- 1:100
- 1:100,000 (correct)
- 1:10
- 1:1000
Which sub-atomic particle is located in the electron shell?
Which sub-atomic particle is located in the electron shell?
What is the relative charge of a neutron?
What is the relative charge of a neutron?
Flashcards
Sub-atomic Particles
Sub-atomic Particles
Particles that make up an atom: protons, neutrons, and electrons.
Proton
Proton
A positively charged particle found in the nucleus of an atom, with a relative mass of 1.
Neutron
Neutron
A neutral particle located in the nucleus of an atom, similar in mass to protons.
Electron
Electron
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Atom Size Ratio
Atom Size Ratio
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Study Notes
Subatomic Particles
- Atoms are extremely small and require magnification to be seen
- Subatomic particles are much smaller than atoms
- Electrons are far away from the nucleus, about 5 km if protons were the size of a football
- Protons and neutrons are about the same size, with a relative mass of 1
- Electrons have a much smaller mass, about 1/1840th of a proton or neutron
- Protons have a positive charge
- Neutrons have no charge
- Electrons have a negative charge
- Protons and neutrons are located in the nucleus
- Electrons are located in electron shells, far away from the nucleus
Relative Sizes and Charges of Subatomic Particles
- Subatomic particles have different masses and charges
- Protons and neutrons have approximately the same mass, with a relative mass of 1
- Electrons have a much smaller mass, about 1/1840th of the mass of a proton or neutron
- Proton charge is +1
- Neutron charge is 0
- Electron charge is -1
Location of Subatomic Particles
- Protons and neutrons are found in the nucleus of an atom
- Electrons are found in electron shells around the nucleus
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