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






2. Subatomic particle without a charge; found in nucleus






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






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






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






6. Atoms that are held together by covalent bonds






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






8. Atoms that have lost or gained electrons






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






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






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






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






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






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






15. Indicates the formation of new substances from previous substances






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






17. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






26. Anything that occupies space and has mass






27. Anything that occupies space and has mass






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






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






30. Occurs when atoms share electrons






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






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






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






34. Subatomic particle without a charge; found in nucleus






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






36. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






44. Indicates the formation of new substances from previous substances






45. Occurs when atoms transfer electrons to other atoms






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






47. Occurs when atoms share electrons






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






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






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