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






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






4. Occurs when atoms transfer electrons to other atoms






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






6. Atoms that are held together by covalent bonds






7. Occurs when atoms share electrons






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






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






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






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






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






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






14. Subatomic particle without a charge; found in nucleus






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






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






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






18. Anything that occupies space and has mass






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






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






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






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






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






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






25. Anything that occupies space and has mass






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






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






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






29. Subatomic particle without a charge; found in nucleus






30. Atoms that have lost or gained electrons






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






32. Indicates the formation of new substances from previous substances






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






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






35. Occurs when atoms share electrons






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






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






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






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






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






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






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






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






44. Atoms that have lost or gained electrons






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






46. Indicates the formation of new substances from previous substances






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






48. Occurs when atoms transfer electrons to other atoms






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






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