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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 & one being carbon






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






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






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






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






6. Subatomic particle without a charge; found in nucleus






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






8. Subatomic particle without a charge; found in nucleus






9. Indicates the formation of new substances from previous substances






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






11. Atoms that are held together by covalent bonds






12. Anything that occupies space and has mass






13. Occurs when atoms transfer electrons to other atoms






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






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






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






17. Occurs when atoms share electrons






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






19. Atoms that are held together by covalent bonds






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






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






22. Occurs when atoms share electrons






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






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






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






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






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






28. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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






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






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






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






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






43. Atoms that have lost or gained electrons






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






45. Occurs when atoms transfer electrons to other atoms






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






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






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






49. Atoms that have lost or gained electrons






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