ELEMENT, COMPOUND or MIXTURE ELEMENT, COMPOUND or MIXTURE 1.State whether each substance below is an element, a compound, or a mixture. 1.State whether each substance below is an element, a compound, or a mixture. 2. Complete the definitions using words from the box below. 2. Complete the definitions using words from the box below. two or more two or more not chemically joined only one chemically joined two or more two or more not chemically joined only one chemically joined An element is made up of _________________ type of atom. An element is made up of _________________ type of atom. A compound is made up of _______________ different atoms ______________ together. A compound is made up of _______________ different atoms _____________________ together. A mixture is made up of ____________________ different atoms/moleculess _______________________ together. 3. State whether each substance below is an element, a compound, or a mixture. SUBSTANCE Carbon Sulphuric acid Salt water Magnesium oxide calcium CHEMICAL FORMULAE O2 H2SO4 NaCl + H2O MgO C ELEMENT, COMPOUND OR MIXTURE A mixture is made up of ____________________ different atoms/moleculess _______________________ together. 3. State whether each substance below is an element, a compound, or a mixture. SUBSTANCE Carbon Sulphuric acid Salt water Magnesium oxide calcium CHEMICAL FORMULAE O2 H2SO4 NaCl + H2O MgO C ELEMENT, COMPOUND OR MIXTURE NAME: ________________________ Section: ___________ NAME: ________________________ Section: ___________ ACTIVITY NO 3: ELEMENTS and COMPOUNDS Objectives: ● identify the component elements in a compound; and ● determine the numbers of atoms in each element in a compound. ACTIVITY NO 3: ELEMENTS and COMPOUNDS Objectives: ● identify the component elements in a compound; and ● determine the numbers of atoms in each element in a compound. Direction: Name the elements and the corresponding number of atoms in the following compounds. Use the periodic table to guide you in answering. Direction: Name the elements and the corresponding number of atoms in the following compounds. Use the periodic table to guide you in answering. Chemical Formula NaHCO3 Chemical Name Sodium hydrogen carbonate or Sodium bicarbonate CaMg(CO3)2 Calcium magnesium carbonate 1. H2O2 Common Name Baking soda Dolomite Hydrogen peroxide Number of atoms in each element 1 sodium (Na) 1 hydrogen (H) 1 carbon (C) 3 oxygen (O) 1 calcium (C) 1 magnesium (Mg) 2 carbon (C) 6 oxygen (O) Chemical Formula NaHCO3 Chemical Name Sodium hydrogen carbonate or Sodium bicarbonate CaMg(CO3)2 Calcium magnesium carbonate Common Name Baking soda Dolomite 1. H2O2 2. CF2Cl2 Agua Oxinada Dichlorodifluoromethane Freon Hydrogen peroxide 2. CF2Cl2 Agua Oxinada Dichlorodifluoromethane Freon 3. C3H8O3 Trihydroxy propanol Glycerin 3. C3H8O3 Trihydroxy propanol Glycerin 4. CaCO3 Calcium carbonate Limestone 4. CaCO3 Calcium carbonate Limestone 5. HCl Hydrochloric acid 5. HCl Hydrochloric acid 6. C8H8O3 Methyl salicylate 6. C8H8O3 Methyl salicylate 7. NaCl Sodium chloride Muriatic acid Oil of wintergreen Rock salt 7. NaCl Sodium chloride Muriatic acid Oil of wintergreen Rock salt 8. SiO2 Silicon dioxide Quartz 8. SiO2 Silicon dioxide Quartz 9. NaOCl Sodium hypochlorite 9. NaOCl Sodium hypochlorite 10. NaOH Sodium hydroxide Bleach (laundry) Lye/Caustic soda 10. NaOH Sodium hydroxide Bleach (laundry) Lye/Caustic soda Number of atoms in each element 1 sodium (Na) 1 hydrogen (H) 1 carbon (C) 3 oxygen (O) 1 calcium (C) 1 magnesium (Mg) 2 carbon (C) 6 oxygen (O)
