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






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






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






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






5. Atoms that are held together by covalent bonds






6. Occurs when atoms share electrons






7. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






15. Occurs when atoms share electrons






16. Atoms that have lost or gained electrons






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






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






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






20. Atoms that have lost or gained electrons






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






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






23. Anything that occupies space and has mass






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






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






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






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






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






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






30. Atoms that are held together by covalent bonds






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






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






33. Occurs when atoms transfer electrons to other atoms






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






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






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






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






38. Anything that occupies space and has mass






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






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






41. Indicates the formation of new substances from previous substances






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






43. Subatomic particle without a charge; found in nucleus






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






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






46. Subatomic particle without a charge; found in nucleus






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






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






49. Indicates the formation of new substances from previous substances






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