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Basic Chemistry

Subjects : science, chemistry
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Subatomic particle having a positive charge; found in nucleus






2. A covalent bond in which one pair of electrons is shared






3. Atoms that are held together by covalent bonds






4. Atoms having the same numbers of protons but different numbers of neutrons






5. A covalent bond in which four valence electrons are shared between two atoms






6. The smallest particle of an element that retains the properties of the element






7. Subatomic particle without a charge; found in nucleus






8. Substance containing two or more elements chemically combined in a fixed ratio






9. Identifies a specific element; equals the number of protons in an atom of each element






10. Protons and neutrons together; make up the center of an atom






11. Occurs when atoms share electrons






12. An unstable atom in which the nucleus decays (breaks down) releasing particles and energy






13. A covalent bond in which one pair of electrons is shared






14. Anything that occupies space and has mass






15. A covalent bond in which four valence electrons are shared between two atoms






16. Interaction of substances that lead to the formation of new substances






17. Subatomic particle having a positive charge; found in nucleus






18. Ending materials of a reaction; found on right side of chemical equation






19. Shows the number and types of atoms in a molecule and how they are arranged






20. Substance made of two or more elements & one being carbon






21. Electrons in the outermost energy level; they are involved in bond formation






22. Indicates the number and types of atoms in a molecule






23. Subatomic particle having a negative charge; not in nucleus but surrounds it






24. Occurs when atoms transfer electrons to other atoms






25. Atoms that have lost or gained electrons






26. Protons and neutrons together; make up the center of an atom






27. Electrons in the outermost energy level; they are involved in bond formation






28. Anything that occupies space and has mass






29. Occurs when atoms share electrons






30. Atoms having the same numbers of protons but different numbers of neutrons






31. Substance made of two or more elements & none of which is carbon






32. Indicates the formation of new substances from previous substances






33. Atoms that have lost or gained electrons






34. Atoms that are held together by covalent bonds






35. Indicates the number and types of atoms in a molecule






36. Occurs when atoms transfer electrons to other atoms






37. Indicates the formation of new substances from previous substances






38. Interaction of substances that lead to the formation of new substances






39. Identifies a specific element; equals the number of protons in an atom of each element






40. A pure substance that cannot be broken down into other substances by chemical reactions






41. Substance made of two or more elements & none of which is carbon






42. Ending materials of a reaction; found on right side of chemical equation






43. The starting materials for a reaction; found on left side of chemical equation






44. A pure substance that cannot be broken down into other substances by chemical reactions






45. The starting materials for a reaction; found on left side of chemical equation






46. Shows the number and types of atoms in a molecule and how they are arranged






47. Subatomic particle having a negative charge; not in nucleus but surrounds it






48. Subatomic particle without a charge; found in nucleus






49. Substance containing two or more elements chemically combined in a fixed ratio






50. Substance made of two or more elements & one being carbon