Prayer to the Holy Spirit!
Come, Holy Spirit,
Fill the hearts of your faithful,
And kindle in them the fire of your love
Send forth your spirit
And you shall renew the face of the Earth.
Lord, by the light of the Holy Spirit, you have taught the hearth of your
faithful. In the same spirit, help us to relish what is right and always rejoice in
his consolations. We ask this through Christ our Lord,
Amen.
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Evidence of a chemical
reaction
Dr. Cristobal Torres-Palacios
Expected
learning
• To learn the signals that show a chemical
reaction has occurred.
Some clues for chemical reaction:
•
•
•
•
The color changes.
A solid forms.
Bubbles forms.
Heat or a flame is produced or heat is
absorbed.
Some clues for chemical reaction:
•
The color changes.
HCl + Co(NO3)2 -------- CoCl4 + H2O
Some clues for chemical reaction:
•
A solid forms.
Pb(NO3)2(aq) + K2CrO4(aq) ==> PbCrO4(s) + 2 KNO3(aq)
Some clues for chemical reaction:
• Bubbles forms.
• When dropping a piece of
metallic calcium into water.
• Ca(s) + H2O ------ CaO + H2(g)
Some clues for chemical reaction:
• Heat or a flame is
produced or heat is
absorbed.
Burning of propane:
C3H8 + 5O2 ------- 3CO2 + 4H2O
Chemical Reactions
• Expected learning:
• To identify the characteristics of a
chemical reaction and the
information given by a chemical
equation.
•
Burning of methane
CH4 + O2
CO2 + H2O
Potassium and water
K(s) + H2O(l)
H2(g) + KOH(aq)