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Assignment 23: What is a Chemical Equation? Table salt can be melted. If an electric current passes through melted sodium chloride, a chemical reaction takes place. This is the chemical equation for this reaction: (20 marks) 2NaCl - 2Na + Clz outside 1. The reaction has one reactant. Name the reactant: decomposthen reaction 2. The reactant in its natural state is a native element 3. The reactant S (is, is not) dangerous . 4. Name the products: cardon dioxide and gas, and helium agle 5. What is the state of sodium? sodium can explode in water 6. Is Sodium dangerous? yes, dangerous solid elements 7. Are the properties of sodium the same as the properties of sodium chloride? no, the popeches of sodium are not the same as odium. 8. What is the state of chlorine? a pale greenish - yellow gas. 9. Is chlorine dangerous? _deadly gas element 10. Are the properties of chlorine the same as the properties of sodium chloride? no 11. In a chemical reaction, properties. do change. (do, do not) 12. Name the kinds of atoms on the reactant side of this equation. HE and s 13. Name the kinds of atoms on the product side. Fe= (iron , sulfide 14. The kinds of atoms on the reactant side are the same as the atoms on the resultant side. Care, are not) 15. Are they in the same form? Do, but two things that seem. 16. The atoms in the reactant are part of_ a compound (a compound, two elements) 17. The atoms in the product are part of a Compoun (a compound, two elements) 18. The arrangement of the atoms has not changed. (has, has not) 19. In this reaction, atoms have linkcoup . (separated, linked up) 20. In a chemical reaction, the arrangement of the elements Cdoes not change. (does, does not) 47 MPLAR - SCIENCE UNIT STUDENT WORKBOOK