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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. Occurs when atoms share electrons






2. Atoms that have lost or gained electrons






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






4. Atoms that are held together by covalent bonds






5. Anything that occupies space and has mass






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






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






8. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






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






18. Occurs when atoms share electrons






19. Atoms that have lost or gained electrons






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






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






22. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






33. Atoms that are held together by covalent bonds






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






35. Occurs when atoms transfer electrons to other atoms






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






37. Indicates the formation of new substances from previous substances






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






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






40. Subatomic particle without a charge; found in nucleus






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






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






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






44. Anything that occupies space and has mass






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






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






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






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






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






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