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






2. Anything that occupies space and has mass






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






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






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






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






7. Occurs when atoms share electrons






8. Atoms that have lost or gained electrons






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






10. Occurs when atoms share electrons






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






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






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






14. Indicates the formation of new substances from previous substances






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






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






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






18. Occurs when atoms transfer electrons to other atoms






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






20. Atoms that are held together by covalent bonds






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






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






23. Subatomic particle without a charge; found in nucleus






24. Atoms that have lost or gained electrons






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






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






27. Atoms that are held together by covalent bonds






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






29. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






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






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






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






43. Anything that occupies space and has mass






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






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






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






47. Indicates the formation of new substances from previous substances






48. Occurs when atoms transfer electrons to other atoms






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






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