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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. Subatomic particle having a positive charge; found in nucleus






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






4. Atoms that have lost or gained electrons






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






6. Atoms that have lost or gained electrons






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






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






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






10. Subatomic particle without a charge; found in nucleus






11. Occurs when atoms share electrons






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






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






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






15. Occurs when atoms transfer electrons to other atoms






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






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






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






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






20. Anything that occupies space and has mass






21. Occurs when atoms share electrons






22. Indicates the formation of new substances from previous substances






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






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






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






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






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






28. Indicates the formation of new substances from previous substances






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






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






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






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






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






34. Anything that occupies space and has mass






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






36. Atoms that are held together by covalent bonds






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






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






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






40. Subatomic particle without a charge; found in nucleus






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






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






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






44. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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