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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. Subatomic particle without a charge; found in nucleus






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






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






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






6. Occurs when atoms share electrons






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






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






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






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






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






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






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






14. Subatomic particle without a charge; found in nucleus






15. Occurs when atoms share electrons






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






17. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






23. Atoms that have lost or gained electrons






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






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






26. Indicates the formation of new substances from previous substances






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






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






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






30. Occurs when atoms transfer electrons to other atoms






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






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






33. Anything that occupies space and has mass






34. Indicates the formation of new substances from previous substances






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






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






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






38. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






46. Atoms that have lost or gained electrons






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






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






49. Anything that occupies space and has mass






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