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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 positive charge; found in nucleus






2. Atoms that are held together by covalent bonds






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






4. Atoms that have lost or gained electrons






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






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






7. Occurs when atoms share electrons






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






9. Indicates the formation of new substances from previous substances






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






11. Occurs when atoms share electrons






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






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






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






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






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






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






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






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






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






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






22. Subatomic particle without a charge; found in nucleus






23. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






31. Subatomic particle without a charge; found in nucleus






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






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






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






35. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






42. Anything that occupies space and has mass






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






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






45. Indicates the formation of new substances from previous substances






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






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






48. Occurs when atoms transfer electrons to other atoms






49. Anything that occupies space and has mass






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