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






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






4. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






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






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






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






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






17. Atoms that are held together by covalent bonds






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






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






20. Anything that occupies space and has mass






21. Occurs when atoms share electrons






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






23. Atoms that are held together by covalent bonds






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






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






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






27. Atoms that have lost or gained electrons






28. Anything that occupies space and has mass






29. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






35. Occurs when atoms share electrons






36. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






44. Indicates the formation of new substances from previous substances






45. Occurs when atoms transfer electrons to other atoms






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






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






48. Subatomic particle without a charge; found in nucleus






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






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