Questions and Answers
Which subatomic particle has a positive charge?
Which subatomic particle has a negative charge?
Which subatomic particle has no charge?
What does the mass of a proton equal?
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What does the mass of a neutron equal?
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What term describes the number of protons in an element?
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What term describes the sum of the protons and neutrons in an element?
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What does the mass number minus the atomic number equal?
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What is the term for an element that has extra neutrons?
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What is the term for an element that has extra electrons?
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Study Notes
Subatomic Particles
- Protons carry a positive charge and are found in the nucleus of an atom.
- Electrons have a negative charge and orbit around the nucleus.
- Neutrons are neutral particles, also located in the nucleus, with no electrical charge.
Mass of Subatomic Particles
- The mass of a proton is approximately 2000 times that of an electron.
- A neutron has a mass equivalent to that of one proton.
Atomic Structures
- Atomic Number refers to the number of protons in the nucleus of an element, determining the element's identity.
- Mass Number is the total count of protons and neutrons within an element’s nucleus.
Relationships in Atomic Composition
- The number of neutrons in an atom can be found by subtracting the atomic number from the mass number.
- Isotopes are variants of an element that contain additional neutrons compared to the standard atomic form.
- Ions are formed when an atom gains or loses electrons, resulting in a net charge due to the imbalance of protons and electrons.
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