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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. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






9. Occurs when atoms share electrons






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






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






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






13. Subatomic particle without a charge; found in nucleus






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






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






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






17. Subatomic particle without a charge; found in nucleus






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






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






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






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






22. Atoms that are held together by covalent bonds






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






24. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






30. Atoms that have lost or gained electrons






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






32. Occurs when atoms transfer electrons to other atoms






33. Occurs when atoms share electrons






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






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






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






37. Anything that occupies space and has mass






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






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






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






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






42. Indicates the formation of new substances from previous substances






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






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






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






46. Anything that occupies space and has mass






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






48. Indicates the formation of new substances from previous substances






49. Atoms that are held together by covalent bonds






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