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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. Anything that occupies space and has mass






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






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






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






5. Occurs when atoms transfer electrons to other atoms






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






7. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






14. Occurs when atoms share electrons






15. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






21. Indicates the formation of new substances from previous substances






22. Subatomic particle without a charge; found in nucleus






23. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






31. Atoms that have lost or gained electrons






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






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






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






37. Atoms that are held together by covalent bonds






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






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






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






41. Atoms that are held together by covalent bonds






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






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






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






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






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






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






48. Occurs when atoms share electrons






49. Atoms that have lost or gained electrons






50. Anything that occupies space and has mass