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






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






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






5. Atoms that are held together by covalent bonds






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






7. Occurs when atoms share electrons






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






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






10. Indicates the formation of new substances from previous substances






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






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






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






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






15. Occurs when atoms transfer electrons to other atoms






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






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






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






19. Occurs when atoms share electrons






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






21. Anything that occupies space and has mass






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






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






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






25. Anything that occupies space and has mass






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






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






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






29. Atoms that have lost or gained electrons






30. Atoms that are held together by covalent bonds






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






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






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






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






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






36. Subatomic particle without a charge; found in nucleus






37. Indicates the formation of new substances from previous substances






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






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






40. Atoms that have lost or gained electrons






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






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






43. Subatomic particle without a charge; found in nucleus






44. Identifies a specific element; equals the number of protons in an atom of each 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. A pure substance that cannot be broken down into other substances by chemical reactions






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






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






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