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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 containing two or more elements chemically combined in a fixed ratio






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






3. Anything that occupies space and has mass






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






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






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






7. Atoms that have lost or gained electrons






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






9. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






16. Occurs when atoms transfer electrons to other atoms






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






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






19. Atoms that are held together by covalent bonds






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






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






22. Indicates the formation of new substances from previous substances






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






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






25. Atoms that have lost or gained electrons






26. Occurs when atoms share electrons






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






30. Indicates the formation of new substances from previous substances






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






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






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






34. Occurs when atoms transfer electrons to other atoms






35. Occurs when atoms share electrons






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






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






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






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






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






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






42. Atoms that are held together by covalent bonds






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






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






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






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






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






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






49. Subatomic particle without a charge; found in nucleus






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