Freezing particles become less vigorous d condensing

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Freezing- particles become less vigorous d. Condensing- particles become less vigorous 2. Use the table to answer these questions. a. What state would each of the elements be at room temperature (25°C)? Copper: solid , Magnesium: solid , Oxygen: gas , Carbon: solid , Helium: gas , Sulphur: solid. b. Which elements would be a gas at 2000°C? Copper and carbon. 3. The particle model is the simplification that all particles are small, solid spheres. This model is useful for explaining changes of state. Describe the limitations (drawbacks) of this model. - The particles in solids, liquids and gases have different amounts of energy. - They are arranged differently and move in different ways 4. Are these elements or compounds? a. Sodium chloride - compound b. Oxygen gas - element c. KI – compound d. Co - element e. CO - compound 5. Write the symbols for these elements. Hydrogen H Carbon C Sodium Na Sulfur S Helium He Nitrogen N Magnesium Mg Chlorine Cl Lithium Li Oxygen O Aluminium Al Argon Ar Beryllium Be Fluorine F Silicon Si Potassium K Boron B Neon Ne Phosphorus P Calcium Ca 6. Name these compounds. 1. LiO lithium oxide 6. CuCl 2 Copper chloride 11. HCl Hydrogen chloride 2. AlCl 3 Aluminium chloride 7. H 2 O Hydrogen oxide 12. CaBr Calcium bromide 3. MgCl 2 Magnesium chloride 8. H 2 SO 4 sulphuric acid 13. K 2 O Potassium oxide 4. FeS Iron sulphide 9. KNO 3 potassium nitrate 14. Al 2 O 3 aluminium oxide 5. NaCl Sodium chloride 10. LiOH lithium hydroxide 15. CO 2 Carbon dioxide
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  • Spring '18
  • jane smill
  • Chemical element, Oxide

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