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






2. Anything that occupies space and has mass






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






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






5. Occurs when atoms share electrons






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






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






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






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






12. Atoms that have lost or gained electrons






13. Indicates the formation of new substances from previous substances






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






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






16. Atoms that have lost or gained electrons






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






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






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






20. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






28. Indicates the formation of new substances from previous substances






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






30. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






39. Subatomic particle without a charge; found in nucleus






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






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






42. Occurs when atoms share electrons






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






44. Atoms that are held together by covalent bonds






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






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






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






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