Podcast
Questions and Answers
What defines a molecule?
What defines a molecule?
- An ion formed from a metal and a nonmetal
- A single atom of an element
- Two or more atoms of the same type bonded together (correct)
- Two or more atoms of different types bonded together
What is the purpose of atoms bonding together?
What is the purpose of atoms bonding together?
- To repel other atoms
- To produce light
- To achieve a full set of electrons (correct)
- To create heat energy
Which of the following describes ionic bonding?
Which of the following describes ionic bonding?
- Electrons are transferred to the nucleus of an atom
- Electrons are shared between two nonmetals
- Atoms repel each other due to similar charges
- Electrons are lost by one atom and gained by another (correct)
What happens to metals during ionic bonding?
What happens to metals during ionic bonding?
How many electrons does oxygen need to gain to achieve stability?
How many electrons does oxygen need to gain to achieve stability?
Flashcards
Atom
Atom
A single element.
Molecule
Molecule
Two or more atoms of the same type bonded together.
Compound
Compound
Two or more atoms of different types bonded together.
Chemical Bond
Chemical Bond
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Ionic bonding
Ionic bonding
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Study Notes
Atoms and Bonding
- Atoms bond to achieve a stable electron configuration, usually having a full outer electron shell (octet rule).
- Molecules are formed when two or more atoms of the same or different types bond together.
- Compounds are formed when two or more different atoms bond together.
Types of Bonding
- Ionic bonding occurs between a metal and a nonmetal.
- Metals lose electrons, becoming positively charged ions (cations).
- Nonmetals gain electrons, becoming negatively charged ions (anions).
- Opposite charges attract, forming an ionic bond.
- Covalent bonding occurs between nonmetals.
- Atoms share electrons to achieve a full outer electron shell.
How Atoms Make Ionic Bonds
- Ionic bonding happens between metals and nonmetals.
- Metals lose valence electrons, becoming positively charged.
- Nonmetals gain valence electrons, becoming negatively charged.
- The opposite charges attract, forming the ionic bond.
- All elements want their outer shell to be full.
Valence Electrons and Stability
- Atoms gain or lose electrons to achieve a complete outer electron shell (stable configuration, usually 8 valence electrons).
- Valence electrons are the outermost electrons.
- This stable valence electron count means 8 electrons in the outer shell.
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