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






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






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






4. Indicates the formation of new substances from previous substances






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






6. Atoms that are held together by covalent bonds






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






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






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






10. Occurs when atoms share electrons






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






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






13. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






20. Subatomic particle without a charge; found in nucleus






21. Occurs when atoms transfer electrons to other atoms






22. Occurs when atoms share electrons






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






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






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






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






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






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






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






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






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






32. Occurs when atoms transfer electrons to other atoms






33. Atoms that have lost or gained electrons






34. Atoms that have lost or gained electrons






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






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






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






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






39. Anything that occupies space and has mass






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






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






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






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






44. Anything that occupies space and has mass






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






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






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






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






49. Atoms that are held together by covalent bonds






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