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Chemistry

Delve into the study of matter, its properties, composition, structure, and the changes it undergoes during chemical reactions. Chemistry is the central science connecting other scientific disciplines.

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Questions

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Q: How many neutrons are in the element aluminum 27

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Q: WHY HF is dibasic

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Q: Which element has a full outermost energy level with 2 electrons

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Q: What are hard substances

Q: How many protons and electrons in a sodium ion

Q: What is an non-example for gas

Q: What is the used to determine the number of each atom in an ionic formula

Q: Why were iodine pills dispensed in schools in the 1950's

Q: Which is the worst electrical conductor tin copper rubber air or water

Q: What are the similarities between strong acids and weak acids

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Q: What is the name for the covalent compound Cl4

Q: How many electrons must a magnesium gain or lose to achieve electron configuration

Q: Why do elements in a group have the same number of valence electrons

Q: How many atoms of cobalt would there be in a 2.2-gram sample of cobalt

Q: What is the oxidation number of Mn in 2MnO2

Q: How does orange juice affect the ice cube melting rate

Q: Is sodium hydrogencarbonate and citric acid an exothermic or endothermic reaction

Q: Why peptide bond is rigid and planar

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