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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. Subatomic particle without a charge; found in nucleus






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






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






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






7. Anything that occupies space and has mass






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






9. Atoms that are held together by covalent bonds






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






11. Atoms that are held together by covalent bonds






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






13. Occurs when atoms transfer electrons to other atoms






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






15. Occurs when atoms transfer electrons to other atoms






16. Anything that occupies space and has mass






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






18. Indicates the formation of new substances from previous substances






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






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






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






22. Occurs when atoms share electrons






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






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






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






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






27. Subatomic particle without a charge; found in nucleus






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






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






30. Occurs when atoms share electrons






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






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






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






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






35. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






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






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






47. Atoms that have lost or gained electrons






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






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






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