Chemistry is the study of matter and its properties as well as the changes it undergoes . It encompasses a vast array of topics including atomic structure, chemical bonding, chemical reactions, thermodynamics and kinetics . It is a fundamental science that underpins many other fields including biology, medicine, materials science, and environmental science . A strong understanding of chemistry is crucial for various scientific and technological advances, including practice problems, explanations of concepts and information on laboratory techniques .
What is the name of the process where water changes.
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A. BoilingB. CondensationC. EvaporationD. Sublimation
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Which gas is responsible for the greenhouse effect? | warming.
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A. OxygenB. NitrogenC. Carbon DioxideD. Hydrogen
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What is the SI unit for pressure? | unit pressure.
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A. NewtonB. JouleC. PascalD. Kelvin
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What is the name of the process by which a.
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A. MeltingB. EvaporationC. CondensationD. Freezing
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What is the oxidation state of manganese (Mn) in KMnO₄?
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A. +2B. +4C. +6D. +7
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What type of reaction is represented by the equation: A.
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A. DecompositionB. SynthesisC. Single displacementD. Double displacement
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Which element is known as the ‘building block of life’?
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A. OxygenB. HydrogenC. CarbonD. Nitrogen
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What is the oxidation state of chlorine in HClO₄? |.
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A. +1B. +5C. +7D. -1
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What is the molar mass of ethanol (C₂H₅OH)? | mass.
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A. 30.07 g/molB. 46.07 g/molC. 60.05 g/molD. 74.08 g/mol
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What type of bond is formed between a metal and.
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A. Covalent bondB. Hydrogen bondC. Ionic bondD. Metallic bond
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