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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. Indicates the formation of new substances from previous substances






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






4. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






10. Subatomic particle without a charge; found in nucleus






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






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






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






14. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






23. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






31. Atoms that have lost or gained electrons






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






33. Atoms that are held together by covalent bonds






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






35. Anything that occupies space and has mass






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






37. Occurs when atoms transfer electrons to other atoms






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






39. Occurs when atoms share electrons






40. Atoms that have lost or gained electrons






41. Indicates the formation of new substances from previous substances






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






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






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






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






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






47. Subatomic particle without a charge; found in nucleus






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






49. Occurs when atoms share electrons






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