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






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






4. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






11. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






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






23. Anything that occupies space and has mass






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






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






26. Subatomic particle without a charge; found in nucleus






27. Subatomic particle without a charge; found in nucleus






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






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






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






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






32. Indicates the formation of new substances from previous substances






33. Atoms that have lost or gained electrons






34. Atoms that have lost or gained electrons






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






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






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






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






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






40. Occurs when atoms share electrons






41. Indicates the formation of new substances from previous substances






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






43. Atoms that are held together by covalent bonds






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






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






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






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






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






49. Occurs when atoms share electrons






50. Anything that occupies space and has mass