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General Chemistry MCQs

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1. Which of the following is NOT a state of matter?





2. The atomic number of an element is determined by the number of:





3. Which of the following is a noble gas?





4. The chemical symbol for potassium is:





5. Which of the following is a greenhouse gas?





6. The process of rusting of iron is an example of:





7. What is the chemical formula for water?





8. The atomic mass of an element is determined by the number of:





9. Which of the following is a halogen?





10. The smallest unit of an element that retains its chemical properties is a(n):





11. An acid turns blue litmus paper:





12. The SI unit for temperature is:





13. Which of the following is a non-metal?





14. The number of valence electrons in an atom of oxygen is:





15. The chemical formula for ammonia is:





16. The law that states mass cannot be created or destroyed in a chemical reaction is:





17. A substance that speeds up a chemical reaction without being consumed itself is a(n):





18. The pH scale measures the acidity or alkalinity of a substance. A pH of 7 indicates:





19. The chemical symbol for gold is:





20. Which of the following is a transition metal?





21. An example of a heterogeneous mixture is:





22. The process of a gas changing directly to a solid is called:





23. Which of the following elements is a noble gas?





24. The chemical formula for table salt is:





25. What is the formula for methane?





26. A substance that cannot be broken down into simpler substances by chemical means is a:





27. The process of removing salt from seawater is called:





28. Which of the following is a property of acids?





29. The bond formed when electrons are transferred from one atom to another is called a(n):





30. The chemical formula for sulfuric acid is:





31. Which of the following is a greenhouse gas?





32. The process of converting a liquid into a gas is called:





33. The branch of chemistry concerned with the study of carbon compounds is called:





34. Which of the following is a common unit for pressure?





35. The formula mass of a substance is the sum of the atomic masses of all atoms in a:





36. The process of a solid changing directly to a gas is called:





37. Which of the following is NOT a characteristic of metals?





38. The chemical formula for glucose is:





39. Which of the following is a property of bases?





40. The SI unit for amount of substance is the:





41. Which of the following is a noble gas?





42. The study of the flow of heat in chemical reactions is a part of:





43. Which of the following elements is a metalloid?





44. The process of a gas changing into a liquid is called:





45. The study of the composition of substances and the changes they undergo is:





46. Which of the following is an example of a chemical change?





47. The process by which a gas changes directly to a solid is called:





48. The chemical formula for carbon dioxide is:





49. The SI unit for electric current is the:





50. Which of the following is a common unit for energy?





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