Chemical Reactions Lab baking soda lemon juice

Name______________________________________ Chemical Reactions Lab#1: Baking Soda and Lemon Juice

Period_________

Balance the Equation: __C6H8O7 + __NaHCO3 --> __CO2 + __H2O + __Na3C6H5O7

Problem: How do you know a chemical reaction has taken place?

Hypothesis: If I mix baking soda, Lemon juice, and brothymol blue, then a chemical reaction will take place

Materials: baking soda brothymol blue

thermometer lemon juice balance pH

Procedures:

1.Identify the state of matter, pH, and color of the baking soda and lemon juice 2.Place the brothymol blue into the container of baking soda. 3.Record observations 4.Pour the brothymol blue into the container of lemon juice. 5.record observations 6.Place the thermometer into the lemon juice and record the starting temperature 7.place the bag onto the balance 8.gently pour the baking soda into the lemon juice. 9.Record the pH, color, state of matter, and other evidences of chemical reactions 10. Watch the thermometer, once the temperature stops changing record it

Identify the compounds: Reactants: Baking soda (NaHCO3) is a ______________ compound lemon juice (C6H8O7) is a _______________ compound Products: Carbon Dioxide (CO2) is a ______________ compound Water (H2O) is a ______________ compound Carbonic Acid (Na3C6H5O7) is a _____________ compound

Date Tables

Baking Soda

State of Matter

Color

Temperature

X

pH

Mixed with Bromthymol Blue

Other

lemon juice

Both

Signs of a Chemical Reaction: __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________

Title: Change in energy during an Exothermic/Endothermic Reaction

Label _______________________

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