Chemical Equation ppt
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Transcript of Chemical Equation ppt
![Page 1: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/1.jpg)
WATER + MILO MILO WATER
![Page 2: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/2.jpg)
FLOUR + WATER + PRAWN PRAWN “CUCUR”
![Page 3: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/3.jpg)
SYRAP + LIME + WATER LIME SYRAP
![Page 4: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/4.jpg)
BREAD + JELLY + PEANUT BUTTER PEANUT BUTTER AND JELLY BREAD
![Page 5: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/5.jpg)
CARBON + OXYGEN CARBON DIOXIDE
![Page 6: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/6.jpg)
MAGNESIUM + SULPHURIC ACID MAGNESIUM SULPHATE + HYDROGEN
![Page 7: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/7.jpg)
MAGNESIUM + HYDROCLORIC ACID MAGNESIUM OXIDE + HYDROGEN
![Page 8: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/8.jpg)
HYDROGEN + NITROGEN AMMONIA
![Page 9: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/9.jpg)
ALUMINIUM + IRON (III) OXIDE ALUMINIUM OXIDE + IRON
![Page 10: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/10.jpg)
SILVER NITRATE + CALCIUM CHLORIDE SILVER CHLORIDE + CALCIUM NITRATE
![Page 11: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/11.jpg)
CHEMICALEQUATION
![Page 12: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/12.jpg)
• Chemical equation is a way of representing a chemical reaction.
• It shows the starting substances (reactants) and the new substances formed (products).
• There are 2 types of equations:– Word equation: uses words– Chemical equation: uses symbols and formulae
reactant + reactant product(s)
![Page 13: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/13.jpg)
Can you identify which one is the reactant and which one is the product
1. water + milo milo water
reactant product
2. flour + water + prawn prawn “cucur”
reactant product
![Page 14: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/14.jpg)
3. syrap + lime + water lime syrap
reactant product
4. CARBON + OXYGEN CARBON DIOXIDE
reactant product
5. MAGNESIUM + SULPHURIC ACID MAGNESIUM SULPHATE + HYDROGEN
reactant
product
![Page 15: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/15.jpg)
Writing Chemical Equations
• Chemical equations have the same number of atoms of each element on both sides of the equation.– No atoms are created or destroyed during a
reaction. They are only rearranged.– Therefore, the number of atoms on both sides of
the equation must be equal.
![Page 16: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/16.jpg)
• Sometimes, state symbols are shown. There are 4 state symbols:– solid (s)– liquid (l)– gas (g)– aqueous (aq)
dissolved
![Page 17: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/17.jpg)
Reacting Hydrogen and Oxygen
Step 1: Write the word equation
Step 2: Write the chemical equation
hydrogen + oxygen water
H2 + O2 H2O
![Page 18: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/18.jpg)
Reacting Hydrogen and Oxygen
Step 3: Check if the equation is balanced.H2 + O2 H2O
H – 2O – 2
H – 2O – 1
H2 + O2 2H2O
H – 2O – 2
H – 4O – 2
2H2 + O2 2H2O
H – 4O – 2
H – 4O – 2
![Page 19: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/19.jpg)
Step 4 : Put in physical state or symbol that appropriate
2H2(g) + O2(g) 2H2O(l)
![Page 20: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/20.jpg)
Test yourself
1. Potassium is burnt completely in the air to produce potassium oxide
2. Dehydration of hydrated copper (II) sulphate into copper sulphate and water
3. Zinc sulphate is decomposes when heated to produce zinc oxide and sulphur trioxide
![Page 21: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/21.jpg)
Chemical Equation
Qualitative aspect Quantitative aspect
product reactant
Physical state
Number of mole
![Page 22: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/22.jpg)
Can you interpret these chemical equation
1. 2KI (aq) + Br2(aq) I2(aq) + 2KBr (aq)
2. 3CuO (s) + 2Al (s) Al2O3(s) + 3Cu (s)
3. CaCO3 (s) ∆ CaO (s) + CO2 (g)
4. 2H2O2 (l) 2H2O (l) + O2(g)
5. 4CuO (s) + CH4 (g) 4Cu (s) + CO2(g) + 2H2O (l)
![Page 23: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/23.jpg)
Can you do it????
25.0 gram of hydrated copper (II) sulphate crystal is heated according to the following formula CuSO4.5H2O CuSO4 + 5H2O
What is the mass of the dehydrated copper (II) sulphate that is formed??
![Page 24: Chemical Equation ppt](https://reader033.fdocuments.us/reader033/viewer/2022061116/5466e7f6af795992368b536d/html5/thumbnails/24.jpg)