Physical Science - Lesson 2 - Chemistry, Exams of Advanced Education

Download Physical Science - Lesson 2 - Chemistry and more Exams Advanced Education in PDF only on Docsity! Physical Science - Lesson 2 - Chemistry – Exam An atom of chlorine has several valence electrons in its - correct answer-third shell. Which statement gives you enough information to say that the atom is electrically neutral? - correct answer-The atom has 7 protons and 7 electrons. The source of the sun's heat is nuclear - correct answer-fusion. Which of the following elements is stable? - correct answer-Neon, atomic number 10 The atomic number of oxygen is 8 because oxygen has - correct answer-eight protons in the nucleus. The names of the compounds FeS, NaCl, and Al3O2 all end in the suffix - correct answer--ide. Sodium and chlorine combine to form table salt, also called sodium chloride, Sodium chloride is a(n) - correct answer-compound. Which of the following accurately describes the placement and classification of iodine? - correct answer-Iodine is located in period 5, group 17 and is classified as a nonmetal A chemical reaction in which two or more substances undergo a chemical union to form a more complex substance is a ____ reaction. - correct answer-combination Which of the following accurately describes acids and bases in regard to ionization? - correct answer-When free hydrogen ions and free hydroxyl ions are removed from solutions of acids and bases, the acidic and basic properties disappear. The measure of the number of atoms in one element that will combine with an atom of another element is - correct answer-valence. Synthetic plastics and made by linking many simple carbon molecules together to form much larger molecules. This process is called - correct answer-polymerization. A substance that turns litmus paper blue and contains hydroxide ions is most likely - correct answer-a base. Matter is anything that - correct answer-has mass and takes up space.