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






2. Occurs when atoms transfer electrons to other atoms






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






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






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






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






7. Occurs when atoms share electrons






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






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






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






11. Occurs when atoms transfer electrons to other atoms






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






13. Occurs when atoms share electrons






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






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






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






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






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






19. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






25. Subatomic particle without a charge; found in nucleus






26. Anything that occupies space and has mass






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






28. Atoms that have lost or gained electrons






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






30. Indicates the formation of new substances from previous substances






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






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






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






34. Atoms that have lost or gained electrons






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






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






37. Anything that occupies space and has mass






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






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






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






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






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






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






44. Indicates the formation of new substances from previous substances






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






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






47. Atoms that are held together by covalent bonds






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






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






50. Atoms that are held together by covalent bonds