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






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






3. Occurs when atoms share electrons






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






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






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






7. Anything that occupies space and has mass






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






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






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






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






12. Anything that occupies space and has mass






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






14. Indicates the formation of new substances from previous substances






15. Atoms that have lost or gained electrons






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






17. Occurs when atoms share electrons






18. Atoms that have lost or gained electrons






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






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






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






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






23. Occurs when atoms transfer electrons to other atoms






24. Atoms that are held together by covalent bonds






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






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






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






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






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






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






31. Atoms that are held together by covalent bonds






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






33. Occurs when atoms transfer electrons to other atoms






34. Subatomic particle without a charge; found in nucleus






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






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






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






38. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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






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






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