Quiz
2. Chemical Formulas and Composition Stoichiometry
Perguntas do quiz (6)
1The word "stoichiometry" is derived from the Greek __, which means "first principle or element," and metron, which means to measure.
- Astoicheios
- Bstoichros
- Cstoicheion
- Dstoichos
2It describes the quantitative relationships among elements in compounds and among substances as they undergo chemical changes.
- AAnalytical Chemistry
- BMolecular Chemistry
- CPhysical Chemistry
- DStoichiometry
3Different forms of the same element in the same physical state are called __.
- AAllotropes
- BIsomers
- CIsotopes
- DStereoisomers
4There are no "molecules" of ionic substances, thus one should not refer to a "molecule of sodium chloride, NaCl." Instead, they are referred to as a __. It represents the smallest, whole-number ratios of ions that yield neutral representations of all substances (both ionic and non-ionic). Therefore, one __ of propane, C3H8, is the same as one molecule of C3H8.
- Aionic unit
- Bformula unit
- Cstructural unit
- Datomic unit
5It is defined as exactly 1/12 of the mass of an atom of a particular kind of carbon atom, called carbon-12.
- AAtomic Mass Unit (amu)
- BAtomic Molecular Unit (amu)
- CAmerican Multi-Universe (amu)
- DAtomic Measuring Unit (amu)
6The __ of a compound is the smallest, whole-number ratio of atoms present.
- Aempirical formula
- Bmolecular formula
- Cstructural formula
- Dchemical formula
Informações
- Descrição
- Chemical Formulas and Composition Stoichiometry
- Autor
- Dodong Aleta
- Idioma
- English
- Visualizações
- 134
- Etiquetas
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