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






2. Atoms that have lost or gained electrons






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






4. Anything that occupies space and has mass






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






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






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






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






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






10. Occurs when atoms transfer electrons to other atoms






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






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






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






14. Occurs when atoms share electrons






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






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






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






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






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






20. Atoms that are held together by covalent bonds






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






22. Atoms that are held together by covalent bonds






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






24. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






31. Anything that occupies space and has mass






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






33. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






40. Occurs when atoms share electrons






41. Indicates the formation of new substances from previous substances






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






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






44. Subatomic particle without a charge; found in nucleus






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






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






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






48. Occurs when atoms transfer electrons to other atoms






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






50. Atoms that have lost or gained electrons