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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 that have lost or gained electrons






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






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






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






5. Subatomic particle without a charge; found in nucleus






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






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






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






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






10. Occurs when atoms share electrons






11. Occurs when atoms share electrons






12. Atoms that are held together by covalent bonds






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. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






35. Occurs when atoms transfer electrons to other atoms






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






37. Atoms that are held together by covalent bonds






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






39. Indicates the formation of new substances from previous substances






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






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






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






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






44. Anything that occupies space and has mass






45. Indicates the formation of new substances from previous substances






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






47. Occurs when atoms transfer electrons to other atoms






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






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






50. Subatomic particle without a charge; found in nucleus