Chemistry definition - Study guides, Class notes & Summaries

CHEM 101 Final Ivy Tech Exam| 155 Questions With Verified Answers What is the definition of a scientific theory? Correct Answer: a model that explains the underlying reasons for observations and laws What term best describes a brief statement that summarizes many past observations and predicts new ones? Correct Answer: scientific law Which of the following is an example of a scientific law? Correct Answer: In a chemical reaction, matter is neither created nor destroyed. Which of the ...

OCR A LEVEL CHEMISTRY DEFINITIONS EXAM [ALREADY GRADED A+] WITH CORRECT DETAILED

Chemistry definitions IEB Mixtures - ANS-A combination of two or more pure substances that are not chemically bonded together homogeneous mixture - ANS-A mixture with uniform composition and the various components of the mixture cannot be seen heterogeneous mixture - ANS-A mixture that does not have uniform composition and the various components of the mixture can be seen Pure substances - ANS-Any substance that is not a mixture, including elements and compounds Elements - ANS-Pure ...

Chemistry Definitions Acids And Bases Study Practice Questions 2024. concentration - correct answer concentration is the abundance of a constituent divided by the total volume of a mixture. equilibrium - correct answer There is equilibrium when the concentrations of reactants and products are in an unchanging ratio. Kc=[C]c[D]d/[A]a[B]b molarity - correct answer The number of moles of solute (the material dissolved) per liter of solution. pH - correct answer pH is a numeric scale used...

All IEB SAGS Chemistry Definitions Molar Mass - ANS-The mass in grams of one mole of that substance. Solute - ANS-The substance that is dissolved in the solution. Solvent - ANS-The substance in which another substance is dissolved, forming a solution. Concentration - ANS-The number of moles of solute per volume of solution. Standard Solution - ANS-A solution of known concentration. Intramolecular Bond - ANS-Bond occurring between atoms within molecules. Electronegativity - ANS-A measu...

IGCSE Chemistry Definitions Exam Questions And Answers 2024. Melting - CORRECT ANSWER Solid changing into a liquid Freezing - CORRECT ANSWER Liquid changing into a solid Condensation - CORRECT ANSWER Gas/vapour changing into a liquid Evaporation - CORRECT ANSWER Liquid changing into a gas/vapour Melting Point - CORRECT ANSWER Temperature at which a solid turns into a liquid Freezing Point - CORRECT ANSWER Temperature at which a liquid changes into a solid Boiling Point - C...

IEB Matric Chemistry Definitions Exam Molar mass - ANS-The mass in grams of one mole of that substance Solute - ANS-The substance that is dissolved in the solution Solvent - ANS-The substance in which another substance is dissolved, forming a solution Concentration - ANS-The number of moles of solute per unit volume of solution Standard solution - ANS-Solution of known concentration Intramolecular bond - ANS-Occurring between atoms within molecules Electronegativity - ANS-Measure of t...

A-level Chemistry Definitions questions and answers well illustrated. isotopes - ANS.atoms of the same element with different numbers of neutrons atomic (proton) number - ANS.the number of protons in the nucleus of an atom mass (nucleon) number - ANS.the number of particles (protons and neutrons) in the nucleus ion - ANS.a positively or negatively charged atom or (covalently bonded) group of atoms (molecular ion) relative isotopic mass - ...

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