. 9/26/11 62 Chemical Equations 10/13/201 5 61 Chemical Equations 10/13/2015 . . Starter: Application Name the reactants in the following equations 2Mg + O 2 2MgO C + O 2 CO 2 2H 2 + O 2 2H 2 O Name the products in the following equations 2CO + O 2 2CO 2 N 2 H 4 + O 2 N 2 + 2H 2 O C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O Connection: Balance/Unbalanced Ws Exit: Write the equation for hydrogen and oxygen to water and label it Label: reactants, products, coefficients, subscripts, Chemical equation, Practice: Notes: Paste Here Identify the following molecule. Write the chemical formula and how many atoms of each element are in it. EQ: How do chemical reactions obey the law of conservation of mass?
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. 9/26/11 62 Chemical Equations 10/13/2015 61 Chemical Equations 10/13/2015 Starter: Application Name the reactants in the following equations 2Mg + O.
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9/26/1162 Chemical Equations
10/13/2015
61 Chemical Equations
10/13/2015
..
Starter: ApplicationName the reactants in the following equations2Mg + O2 2MgOC + O2 CO2
2H2 + O2 2H2O
Name the products in the following equations2CO + O2 2CO2
N2H4 + O2 N2 + 2H2OC6H12O6 + 6O2 6CO2 + 6H2O
Connection: Balance/Unbalanced Ws
Exit:Write the equation for hydrogen and oxygen to water and label it Label: reactants, products, coefficients, subscripts, Chemical equation, elements, and compounds.
Practice: Notes: Paste Here
Identify the following molecule. Write the chemical formula and how many atoms of each element are in it.
EQ: How do chemical reactions obey the law of conservation of mass?
Date Lecture/ Activity/ Lab Page10/8 Practice Writing Chemical Formulas 57-5810/12 Writing Chemical Formulas 59-6010/13 Chemical Equations and the Conservation of Mass 61-62
Table of Contents
Chemical Equations & the Law of Conservation of
Mass
6H2O + 6CO2 C6H12O6+ 6O2
Water + Carbon Dioxide Sugar + Oxygen
Decide whether the following statements are physical changes or chemical changes.
A bicycle left out in the rain begins to rust.Chemical
A match burns, leaving only a charred stick of wood.Chemical
A copper wire is cut into five smaller pieces.Physical
An ice cube melts. Physical
Gasoline burns in a car engine. Chemical
Let’s review physical and chemical changes!
A spoonful of sugar is dissolved in a cup of coffeePhysical
A silver knife and fork tarnish when they are exposed to air for several weeks.Chemical
Leaves of a maple tree turn bright red as winter approaches. Chemical
Water is heated and changed to steam. Physical
Food is digested in your stomach.Chemical
• A chemical equation expresses what happens in a chemical reaction.
• Sometimes a reaction produces a gas, which may be difficult to measure. However, if measured, the mass of the reactants will be equal to the mass of the products.
Starter: ApplicationName the reactants in the following equations2Mg + O2 2MgOC + O2 CO2
2H2 + O2 2H2O
Name the products in the following equations2CO + O2 2CO2
N2H4 + O2 N2 + 2H2OC6H12O6 + 6O2 6CO2 + 6H2O
Connection: Balance/Unbalanced Ws
Exit:Write the equation for hydrogen and oxygen to water and label it Label: reactants, products, coefficients, subscripts, Chemical equation, elements, and compounds.
Practice: Notes: Paste Here
Identify the following molecule. Write the chemical formula and how many atoms of each element are in it.
EQ: How do chemical reactions obey the law of conservation of mass?
• Write the equation for hydrogen and oxygen to water and label it Label: reactants, products, coefficients, subscripts, Chemical equation, elements, and compounds.