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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 having the same numbers of protons but different numbers of neutrons






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






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






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






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






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






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






8. Atoms that have lost or gained electrons






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






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






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






12. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






18. Occurs when atoms share electrons






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






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






21. Occurs when atoms transfer electrons to other atoms






22. Atoms that are held together by covalent bonds






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






24. Indicates the formation of new substances from previous substances






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






26. Occurs when atoms share electrons






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






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






29. Subatomic particle without a charge; found in nucleus






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






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






32. Indicates the formation of new substances from previous substances






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






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






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






36. Anything that occupies space and has mass






37. Atoms that have lost or gained electrons






38. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






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






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






49. Occurs when atoms transfer electrons to other atoms






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