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






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






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






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






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






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






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






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






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






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






11. Indicates the formation of new substances from previous substances






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






13. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






19. Atoms that have lost or gained electrons






20. Atoms that are held together by covalent bonds






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






22. Occurs when atoms transfer electrons to other atoms






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






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






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






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






27. Occurs when atoms share electrons






28. Subatomic particle without a charge; found in nucleus






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






30. Occurs when atoms share electrons






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






32. Subatomic particle without a charge; found in nucleus






33. Anything that occupies space and has mass






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






35. Atoms that have lost or gained electrons






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






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






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






39. Atoms that are held together by covalent bonds






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






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






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






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






44. Anything that occupies space and has mass






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






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






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






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






49. Indicates the formation of new substances from previous substances






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