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 chemical symbol for sodium? | symbol sodium.
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A. SoB. SdC. NaD. S
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What is the molar mass of water (H₂O)? | molometric.
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A. 16 g/molB. 18 g/molC. 20 g/molD. 10 g/mol
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What type of bond is formed when atoms share electrons?
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A. Ionic bondB. Covalent bondC. Hydrogen bondD. Metallic bond
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Define the term ‘isotope’. | isotopes relative & isotopes variants
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A. Atoms with the same number of electronsB. Atoms with different numbers of protonsC. Atoms with the same number of protons but different numbers of neutrons
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What is the pH range of an acidic solution? |.
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A. 7-14B. 0-6C. 0-7D. 7-10
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Which element has the atomic number 6? | compounds carbon.
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A. OxygenB. NitrogenC. CarbonD. Hydrogen
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Which type of reaction involves the combination of two or.
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A. Decomposition reactionB. Single displacement reactionC. Double displacement reactionD. Synthesis reaction
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What is the term for a substance that donates a.
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A. BaseB. SaltC. AcidD. Neutral
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What is the general term for a substance that dissolves.
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A. SolventB. SoluteC. SolutionD. Suspension
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What is the name given to a chemical reaction that.
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A. Endothermic reactionB. Exothermic reactionC. Neutralization reactionD. Decomposition reaction
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