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






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






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






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






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






6. Atoms that have lost or gained electrons






7. Atoms that are held together by covalent bonds






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






9. Occurs when atoms transfer electrons to other atoms






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






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






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






13. Indicates the formation of new substances from previous substances






14. Subatomic particle without a charge; found in nucleus






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






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






17. Occurs when atoms transfer electrons to other atoms






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






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






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






21. Atoms that are held together by covalent bonds






22. Indicates the formation of new substances from previous substances






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






24. Atoms that have lost or gained electrons






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






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






27. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






34. Occurs when atoms share electrons






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






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






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






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






39. Occurs when atoms share electrons






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






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






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






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






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






45. Anything that occupies space and has mass






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






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






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






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






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