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






2. Subatomic particle without a charge; found in nucleus






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






4. Anything that occupies space and has mass






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






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






7. Atoms that have lost or gained electrons






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






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






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






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






12. Atoms that have lost or gained electrons






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






14. Subatomic particle without a charge; found in nucleus






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






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






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






18. Atoms that are held together by covalent bonds






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






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






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






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






23. Occurs when atoms transfer electrons to other atoms






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






25. Occurs when atoms transfer electrons to other atoms






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






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






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






29. Indicates the formation of new substances from previous substances






30. Occurs when atoms share electrons






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






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






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






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






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






36. Indicates the formation of new substances from previous substances






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






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






39. Anything that occupies space and has mass






40. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






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






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