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Questions and Answers
What is a molecule?
What is a molecule?
- A type of chemical bond
- The smallest unit of a substance (correct)
- A group of three or more atoms
- A group of atoms that have different chemical properties
What holds atoms together in a molecule?
What holds atoms together in a molecule?
- Gravity
- Protons
- Electrons (correct)
- Neutrons
What are homonuclear diatomic molecules?
What are homonuclear diatomic molecules?
- Molecules with identical atoms (correct)
- Molecules with thousands of atoms
- Molecules with three or more atoms
- Molecules with different atoms
Flashcards
Molecule
Molecule
The smallest unit of a substance that retains its properties.
Electrons role in molecules
Electrons role in molecules
Electrons hold atoms together in a molecule through chemical bonds.
Homonuclear diatomic molecules
Homonuclear diatomic molecules
Molecules composed of two identical atoms.
Study Notes
- A molecule is a group of two or more atoms that form the smallest identifiable unit of a pure substance.
- The composition and chemical properties of a substance are retained in a molecule.
- Further subdivision of a substance leads to smaller parts that differ in composition and chemical properties.
- Chemical bonds hold atoms together in a molecule.
- Molecules consist of an aggregation of atoms held together by valence forces.
- Diatomic molecules contain two chemically bonded atoms.
- Homonuclear diatomic molecules have identical atoms, while heteronuclear diatomic molecules have different atoms.
- Molecules with more than two atoms are called polyatomic molecules.
- Polymer molecules may contain many thousands of component atoms.
- Atoms consist of a single nucleus with a positive charge surrounded by a cloud of negatively charged electrons.
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