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






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






3. Atoms that are held together by covalent bonds






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






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






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






7. Atoms that have lost or gained electrons






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






9. Occurs when atoms share electrons






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






11. Occurs when atoms transfer electrons to other atoms






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






13. Subatomic particle without a charge; found in nucleus






14. Anything that occupies space and has mass






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






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






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






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






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






20. Indicates the formation of new substances from previous substances






21. Atoms that are held together by covalent bonds






22. Subatomic particle without a charge; found in nucleus






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






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






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






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






27. Occurs when atoms transfer electrons to other atoms






28. Atoms that have lost or gained electrons






29. Anything that occupies space and has mass






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






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






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






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






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






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






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






37. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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






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






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






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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