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






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






4. Occurs when atoms transfer electrons to other atoms






5. Atoms that are held together by covalent bonds






6. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






14. Subatomic particle without a charge; found in nucleus






15. Indicates the formation of new substances from previous substances






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






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






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






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






20. Occurs when atoms share electrons






21. Occurs when atoms transfer electrons to other atoms






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






23. Atoms that are held together by covalent bonds






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






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






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






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






28. Indicates the formation of new substances from previous substances






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






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






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






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






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






34. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






43. Atoms that have lost or gained electrons






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






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






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






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






48. Occurs when atoms share electrons






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






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