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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. Subatomic particle having a positive charge; found in nucleus






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






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






5. Atoms that are held together by covalent bonds






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






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






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






9. Anything that occupies space and has mass






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






11. Occurs when atoms transfer electrons to other atoms






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






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






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






15. Subatomic particle without a charge; found in nucleus






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






17. Atoms that have lost or gained electrons






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






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






20. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






27. Occurs when atoms share electrons






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






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






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






31. Indicates the formation of new substances from previous substances






32. Atoms that have lost or gained electrons






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






34. Subatomic particle without a charge; found in nucleus






35. Indicates the formation of new substances from previous substances






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






37. Atoms that are held together by covalent bonds






38. Occurs when atoms share electrons






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






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






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






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






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






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






45. Anything that occupies space and has mass






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






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






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






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






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