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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. Indicates the formation of new substances from previous substances






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






4. Atoms that are held together by covalent bonds






5. Atoms that are held together by covalent bonds






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. Indicates the formation of new substances from previous substances






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






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






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






12. Subatomic particle without a charge; found in nucleus






13. Occurs when atoms transfer electrons to other atoms






14. Subatomic particle without a charge; found in nucleus






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






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






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






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






19. Occurs when atoms share electrons






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






21. Occurs when atoms share electrons






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






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






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






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






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. Occurs when atoms transfer electrons to other atoms






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






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






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






32. Atoms that have lost or gained electrons






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






34. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






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






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






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






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






47. Anything that occupies space and has mass






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






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






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