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






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






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






4. Occurs when atoms share electrons






5. Atoms that have lost or gained electrons






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






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






8. Atoms that are held together by covalent bonds






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






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






11. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






17. Atoms that are held together by covalent bonds






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






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






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






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






22. Anything that occupies space and has mass






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






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






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






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






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






28. Atoms that have lost or gained electrons






29. Anything that occupies space and has mass






30. Occurs when atoms share electrons






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






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






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






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






35. Subatomic particle without a charge; found in nucleus






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






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






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






39. Indicates the formation of new substances from previous substances






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






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






42. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






48. Occurs when atoms transfer electrons to other atoms






49. Indicates the formation of new substances from previous substances






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