Chemistry GK Questions in English; Know the Answers

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Chemistry GK Questions in English; Know the Answers

Chemistry GK questions in English can help students improve their understanding of chemical concepts and principles.
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Here Are Some Chemistry GK Questions in English

What is the chemical symbol for sodium? Answer: Na. Explanation: Na is derived from the Latin word for sodium, “natrium.”
What is the pH range of an acidic solution? Answer: 0-6. Explanation: The pH scale ranges from 0-14, with 0 being the most acidic and 14 being the most basic.
What is the process of converting a solid directly to a gas called? Answer: Sublimation. Explanation: Sublimation is a phase transition where a substance goes from a solid to a gas without passing through the liquid phase.
What is the most abundant gas in Earth’s atmosphere? Answer: Nitrogen. Explanation: Nitrogen makes up about 78% of Earth’s atmosphere.
What is the smallest particle of an element called? Answer: Atom. Explanation: An atom is the basic unit of a chemical element.
What is the chemical formula for water? Answer: H2O. Explanation: Water is composed of two hydrogen atoms and one oxygen atom.
What is the process of combining two or more substances to form a new substance called? Answer: Chemical reaction. Explanation: A chemical reaction involves the rearrangement of atoms to form new chemical compounds.
What is the chemical formula for carbon dioxide? Answer: CO2. Explanation: Carbon dioxide is composed of one carbon atom and two oxygen atoms.
What is the study of the composition, structure, properties, and reactions of matter called? Answer: Chemistry. Explanation: Chemistry is a branch of science that deals with the properties and behavior of matter.
What is the term for a substance that cannot be broken down into simpler substances by chemical means? Answer: Element. Explanation: Elements are the building blocks of matter and are composed of only one type of atom.
What is the process of removing electrons from an atom or molecule called? Answer: Ionization. Explanation: Ionization is the process of removing one or more electrons from an atom or molecule.
What is the chemical formula for table salt? Answer: NaCl. Explanation: Table salt, or sodium chloride, is composed of one sodium atom and one chlorine atom.
What is the process of combining hydrogen and oxygen to form water called? Answer: Combustion. Explanation: Combustion is a chemical reaction where a substance reacts with oxygen to produce heat and light.
What is the process of converting a gas to a liquid called? Answer: Condensation. Explanation: Condensation is the process of changing a gas to a liquid by removing heat.
What is the chemical formula for glucose? Answer: C6H12O6. Explanation: Glucose is a simple sugar composed of six carbon atoms, twelve hydrogen atoms, and six oxygen atoms.
What is the process of breaking down a compound into its component elements called? Answer: Decomposition. Explanation: Decomposition is a chemical reaction where a compound is broken down into simpler substances.
What is the process of converting a liquid to a gas called? Answer: Vaporization. Explanation: Vaporization is the process of changing a liquid to a gas by adding heat.
What is the chemical formula for methane? Answer: CH4. Explanation: Methane is composed of one carbon atom and four hydrogen atoms.
What is the term for a substance that speeds up a chemical reaction without being consumed in the reaction? Answer: Catalyst. Explanation: Catalysts lower the activation energy of a chemical reaction, making it easier for the reaction to occur.
What is the process of combining oxygen with a substance to produce energy called? Answer: Oxidation. Explanation: Oxidation is a chemical reaction where a substance reacts with oxygen to produce energy, often in the form of heat and light.
What is the chemical formula for ammonia? Answer: NH3. Explanation: Ammonia is composed of one nitrogen atom and three hydrogen atoms.

What is the process of changing a liquid to a solid called? Answer: Solidification. Explanation: Solidification is the process of changing a liquid to a solid by removing heat.
What is the term for the amount of substance in a given volume of a solution? Answer: Concentration. Explanation: Concentration is the measure of the amount of solute dissolved in a given volume of solvent in a solution.
What is the chemical formula for sulfuric acid? Answer: H2SO4. Explanation: Sulfuric acid is composed of two hydrogen atoms, one sulfur atom, and four oxygen atoms.
What is the process of changing a solid directly to a liquid called? Answer: Melting. Explanation: Melting is the process of changing a solid to a liquid by adding heat.
What is the chemical formula for carbon monoxide? Answer: CO. Explanation: Carbon monoxide is composed of one carbon atom and one oxygen atom.
What is the process of converting a liquid to a gas at the surface of a liquid called? Answer: Evaporation. Explanation: Evaporation is the process of changing a liquid to a gas at the surface of a liquid by adding heat.
What is the chemical formula for hydrochloric acid? Answer: HCl. Explanation: Hydrochloric acid is composed of one hydrogen atom and one chlorine atom.
What is the process of combining two or more substances to form a new substance without the formation of a byproduct called? Answer: Synthesis. Explanation: Synthesis is a chemical reaction where two or more substances react to form a new substance without the formation of a byproduct.
What is the term for a homogeneous mixture of two or more substances? Answer: Solution. Explanation: A solution is a homogeneous mixture of two or more substances where the solute is evenly distributed in the solvent.