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Questions and Answers
Which term describes the attraction between atoms that holds them together in a compound?
Which term describes the attraction between atoms that holds them together in a compound?
- Chemical formula
- Covalent bond
- Chemical bond (correct)
- Metallic bond
What do you call a molecule that has both a slight positive and a slight negative end due to unequal sharing of electrons?
What do you call a molecule that has both a slight positive and a slight negative end due to unequal sharing of electrons?
- Covalent molecule
- Non-polar molecule
- Polar molecule (correct)
- Ionic molecule
What defines a compound in chemistry?
What defines a compound in chemistry?
- A solid structure formed by electrons
- Material made up of two or more different kinds of atoms (correct)
- Material made up of one kind of atom
- A mixture of different substances
Which type of bond forms when two atoms share one or more pairs of valence electrons?
Which type of bond forms when two atoms share one or more pairs of valence electrons?
Which of the following describes an ion?
Which of the following describes an ion?
Flashcards
Chemical Bond
Chemical Bond
The force that holds atoms together in a compound, created by the sharing or transfer of electrons.
Compound
Compound
A substance made up of two or more different types of atoms joined by chemical bonds.
Ion
Ion
An atom that has gained or lost electrons, giving it a positive or negative charge.
Covalent Bond
Covalent Bond
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Molecule
Molecule
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Study Notes
Lesson 1
- A chemical bond is a force that holds atoms together.
- A compound is a material made of two or more different kinds of atoms joined by chemical bonds.
- An electron dot diagram, also known as a Lewis dot diagram, shows valence electrons as dots around an element's chemical symbol.
- Valence electrons are the outermost electrons in an atom; they participate in chemical bonding.
Lesson 2
- A chemical bond—in a compound—is a force that holds atoms together.
- A chemical formula uses symbols to represent elements and numbers to show how many atoms of each element make up a compound.
- A covalent bond occurs when atoms share one or more pairs of valence electrons.
- A molecule is a group of atoms held together by covalent bonds.
- A polar molecule has a slightly positive end and a slightly negative end due to unequal sharing of electrons.
Lesson 3
- An ion is an atom that has a charge because it has lost or gained valence electrons.
- An ionic bond forms due to the attraction between positively and negatively charged ions.
- A metallic bond forms when many metal atoms share their pooled valence electrons.
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