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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 without a charge; found in nucleus






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






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






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






5. Atoms that have lost or gained electrons






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






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






8. Atoms that have lost or gained electrons






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






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






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






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






13. Indicates the formation of new substances from previous substances






14. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






21. Anything that occupies space and has mass






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






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






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






25. Occurs when atoms share electrons






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






27. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






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






37. Atoms that are held together by covalent bonds






38. Atoms that are held together by covalent bonds






39. Anything that occupies space and has mass






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






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






42. Occurs when atoms transfer electrons to other atoms






43. Occurs when atoms share electrons






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






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






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






47. Indicates the formation of new substances from previous substances






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






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






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