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Questions and Answers
What defines a neutral atom?
What defines a neutral atom?
Which of the following describes an ion?
Which of the following describes an ion?
What is the charge of a sulfate ion?
What is the charge of a sulfate ion?
How can isotopes of an atom be defined?
How can isotopes of an atom be defined?
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What characterizes cations?
What characterizes cations?
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Study Notes
Atomic Structure - Chemistry
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Subatomic particles: protons, neutrons, electrons
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Protons are found in the nucleus, with a positive charge and relative mass of 1
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Neutrons are found in the nucleus, with no charge and relative mass of 1
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Electrons are found in the shells, with a negative charge and relative mass of 0.0005
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RAM - (MIXAD) + (M2KA2)... = 100
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Neutral atom - number of protons = number of electrons
Polyatomic Ions
- Ammonium - NH4+
- Hydroxide - OH-
- Nitrate - NO3-
- Sulfate - SO42-
- Carbonate - CO32-
- Phosphate - PO43-
Atomic Number, Mass Number, Isotopes
- Atomic number = number of protons
- Mass number = number of protons + number of neutrons
- Isotopes are atoms of the same element with different numbers of neutrons
Ions and Charges
- Cations are positively charged ions (formed by losing electrons)
- Anions are negatively charged ions (formed by gaining electrons)
- Ions form by changing the number of electrons
Types of Bonding
- Ionic bonding - electrostatic force of attraction between oppositely charged ions
- Covalent bonding - electrostatic force of attraction between shared pair of electrons and the nuclei in both atoms
Other Terms
- PEN numbers - protons, electrons, neutrons
- Isotope - atoms with the same proton number but different neutron number
- Valence shell- outermost shell of electrons
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Description
Test your knowledge on atomic structure, subatomic particles, and polyatomic ions in this chemistry quiz. Explore concepts like atomic number, mass number, and charge of ions, enhancing your understanding of fundamental chemistry principles.
