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






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






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






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






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






6. Atoms that have lost or gained electrons






7. Occurs when atoms transfer electrons to other atoms






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






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






10. Atoms that are held together by covalent bonds






11. Occurs when atoms share electrons






12. Anything that occupies space and has mass






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






14. Occurs when atoms share electrons






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






16. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






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






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






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






30. Indicates the formation of new substances from previous substances






31. Atoms that have lost or gained electrons






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






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






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






35. Atoms that are held together by covalent bonds






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






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






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






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






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






41. Subatomic particle without a charge; found in nucleus






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






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






44. Indicates the formation of new substances from previous substances






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






46. Anything that occupies space and has mass






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






48. Subatomic particle without a charge; found in nucleus






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






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