This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 50 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 50 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which molecule contains an ester group? A) CH3CH2COOH. B) CH3COOCH3. C) CH3COCH2CH2OH. D) OHCCH2CHO. Show Answer Correct Answer: B) CH3COOCH3. 2. A ..... is a combination of many different elements not chemically combined. A) Compound. B) Mixture. C) Chemical. D) Particle. Show Answer Correct Answer: B) Mixture. 3. Organic compounds made only of the elements carbon and hydrogen are called ..... A) Hydrocarbons. B) Carbohydrogens. C) Carbohydrates. D) Hydrocarbonates. Show Answer Correct Answer: A) Hydrocarbons. 4. The ..... are either elements or compounds which are present prior to a chemical reaction. A) Products. B) Reactants. C) Metals. D) Nonmetals. Show Answer Correct Answer: B) Reactants. 5. Which of the following is not true about chemical reactions? A) The reactants and products contain the same types of atoms. B) The reactants and products have different properties. C) The reactants and products are the same substances. D) The reactants and products are different substances. Show Answer Correct Answer: C) The reactants and products are the same substances. 6. When elements chemically combine, which best describes the resulting compound? A) It has different ratios of atoms. B) It has different types of matter. C) It has the same properties as the uncombined elements. D) It has different properties from the uncombined elements. Show Answer Correct Answer: D) It has different properties from the uncombined elements. 7. An ion with a positive charge. A) Cation. B) Anion. C) Electrode. D) Isotope. Show Answer Correct Answer: A) Cation. 8. State of matter that has no definite shape and no definite volume A) Gas. B) Liquid. C) Solid. D) None of above. Show Answer Correct Answer: A) Gas. 9. Compounds are different than elements because compounds are- A) A combination of two or more elements. B) B)not able to be broken down into parts. C) Made from the same type of atoms. D) A pure substance, elements are not. Show Answer Correct Answer: A) A combination of two or more elements. 10. Chemicals that act as biological catalysts by speeding up reactions in living things are called A) Inhibitors. B) Enzymes. C) Fuels. D) Reactants. Show Answer Correct Answer: B) Enzymes. 11. Can be observed without changing into a nother substance A) Physical property. B) Chemical Property. C) Solubility. D) Ooga booga. Show Answer Correct Answer: A) Physical property. 12. What is the formula for calcium carbonate? A) CaCO. B) Ca2(CO3)2. C) CaCO3. D) Ca3CO. Show Answer Correct Answer: C) CaCO3. 13. How many oxygen (0) atoms are in Al(NO3)3? A) 13. B) 9. C) 15. D) 6. Show Answer Correct Answer: B) 9. 14. The amount of matter or stuff in an object A) Volume. B) Mass. C) Force. D) Matter. Show Answer Correct Answer: B) Mass. 15. What type of element usually has a dullappearance and is generally NOT a good conductor of heat or electricity? A) Metal. B) Metalloid. C) Nonmetal. D) Solid. Show Answer Correct Answer: C) Nonmetal. 16. Anything that has mass and takes up space A) Matter. B) Substance. C) Element. D) Mixture. Show Answer Correct Answer: A) Matter. 17. The variable that you measure is the- A) Independent Variable. B) Dependent Variable. C) Constant. D) Repeated Trial. Show Answer Correct Answer: B) Dependent Variable. 18. Matter that flows but has a definite volume A) Solid. B) Liquid. C) Gas. D) Plasma. Show Answer Correct Answer: B) Liquid. 19. The strong forces of attraction between the positive and negative regions of molecules are called A) Dipole-dipole forces. B) London forces. C) Lattice forces. D) Orbital forces. Show Answer Correct Answer: A) Dipole-dipole forces. 20. When the temperature of matter decreases the particles ..... A) Speed up and move farther apart. B) Speed up and move closer together. C) Slow down and move farther apart. D) Slow down and move closer together. Show Answer Correct Answer: D) Slow down and move closer together. ← PreviousNext →Related QuizzesChemistry QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books