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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. Occurs when atoms transfer electrons to other atoms






2. Indicates the formation of new substances from previous substances






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






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






5. Anything that occupies space and has mass






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






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






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






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






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






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






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






13. Occurs when atoms share electrons






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






15. Subatomic particle without a charge; found in nucleus






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






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






18. Anything that occupies space and has mass






19. Atoms that are held together by covalent bonds






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






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






22. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






32. Subatomic particle without a charge; found in nucleus






33. Indicates the formation of new substances from previous substances






34. Atoms that have lost or gained electrons






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






36. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






44. Atoms that are held together by covalent bonds






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






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






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






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






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






50. Occurs when atoms share electrons