Different Reactants
Experiment 2: The Effect of Different Reactants on the Type of Gases Produced
Abdul Aziz Malik
Submission Date: 18th April 2012
Background Information
In the experiment, when oxygen is being tested, a glowing splint will be used and when that splint is placed in to the mystery gas and the splint reignites, then the gas is oxygen. When hydrogen is being tested, a burning splint will be used and when the splint is placed in to the mystery gas and a “pop” sound occurs, then the gas is hydrogen. When carbon dioxide is being tested, limewater will be added to the gas (produced by combining hydrochloric acid and sodium bicarbonate), if the limewater turns cloudy or turns milky then the gas is carbon dioxide.
Question
What is the effect of different reactants on …show more content…
the type of gases produced?
Hypothesis
Oxygen: If Hydrogen Peroxide and Manganese Dioxide are combined, then oxygen will be produced because the chemical formula for Hydrogen Peroxide (H2O2) contains oxygen and the chemical formula for Manganese Dioxide (MnO2) contains oxygen.
Hydrogen: If Hydrochloric acid and Magnesium are combined, then Hydrogen will be produced because the chemical formula for Hydrochloric acid (HCI) contains Hydrogen.
Carbon Dioxide: If Hydrochloric acid and Sodium Bicarbonate are combined, then Carbon Dioxide will be produced because the chemical formula for Sodium Bicarbonate (NaHCO3) contains Carbon Dioxide.
Variables
Independent Variable: The reactants that were added
Dependant Variable: The gases that were produced
Control Variable: The amount of reactants added should stay the same for each experiment, the type of splint should stay the same because different splints could produce different amounts of heat and the type of reactants should stay the same for each experiment.
Materials
Refer to investigation 2.6, identifying mystery gases. Science 9.
Changes: - Apron wasn’t used * A test tube stopper wasn’t used * Tongs weren’t used * Used only one wooden
splint
Procedure
Refer to investigation 2.6, identifying mystery gases. Science 9.
Changes: - Step 7: No tongs were used * Step 11: Test tube stopper was not used
Observations
| Reactants Physical description | Reactions Observations(Physical and Chemical) | Gas Test(s) Performed | Results of gas test Performed | Part1: Hydrogen peroxide & Manganese Dioxide | Manganese -Black Powder- Opaque | The manganese dioxide dissolves in the hydrogen peroxide and bubbles start to form. (Physical) | The glowing splint test | The splint reignited and smoke was created in the test tube | | Peroxide: - Clear liquid- Transparent | | | | Part2: Hydrochloric Acid & Magnesium | Acid: - Clear liquid- Transparent | Bubbles start to form around the magnesium, creating a white thick gas above the magnesium (Physical) | The burning splint Test | A pop occurred as soon as the flame came near the gas. Heat was produced | | Magnesium -Dull- silver - Solid | | | | Part3: Hydrochloric Acid & Sodium Bicarbonate | Acid - Clear liquid- Transparent | Bubbles formed and the sodium bicarbonate dissolved in the hydrochloric acid | The Limewater test | The lime water became cloudy and milky | | Bicarbonate -White Powder-Opaque | | | |
Table1. Observing different reactions caused by different substances and testing the gases produced by them
DATA ANYLASIS 1. The observations of the reactants were recorded first, because it helped to see the effect of the chemical reaction and how it changed the reactant. For example, the manganese dioxide was a powder, but when it was added to the hydrogen peroxide it dissolved in it. 2. A) The gas that was produced for part1 was oxygen because the splint reignited
B) The gas that was produced for part 2 was hydrogen because a pop sound occurred
C) The gas that was produced for part 3 was carbon dioxide because the lime water became milky and cloudy
3. Another indication that you can have is that a flame will go out if it comes near carbon dioxide because, carbon dioxide does not burn and does not allow other substances to burn, so the flame would go out and you would know that this gas is carbon dioxide
Conclusion
Abdul Aziz Malik
Submission Date: 18th April 2012
Background Information
In the experiment, when oxygen is being tested, a glowing splint will be used and when that splint is placed in to the mystery gas and the splint reignites, then the gas is oxygen. When hydrogen is being tested, a burning splint will be used and when the splint is placed in to the mystery gas and a “pop” sound occurs, then the gas is hydrogen. When carbon dioxide is being tested, limewater will be added to the gas (produced by combining hydrochloric acid and sodium bicarbonate), if the limewater turns cloudy or turns milky then the gas is carbon dioxide.
Question
What is the effect of different reactants on …show more content…
the type of gases produced?
Hypothesis
Oxygen: If Hydrogen Peroxide and Manganese Dioxide are combined, then oxygen will be produced because the chemical formula for Hydrogen Peroxide (H2O2) contains oxygen and the chemical formula for Manganese Dioxide (MnO2) contains oxygen.
Hydrogen: If Hydrochloric acid and Magnesium are combined, then Hydrogen will be produced because the chemical formula for Hydrochloric acid (HCI) contains Hydrogen.
Carbon Dioxide: If Hydrochloric acid and Sodium Bicarbonate are combined, then Carbon Dioxide will be produced because the chemical formula for Sodium Bicarbonate (NaHCO3) contains Carbon Dioxide.
Variables
Independent Variable: The reactants that were added
Dependant Variable: The gases that were produced
Control Variable: The amount of reactants added should stay the same for each experiment, the type of splint should stay the same because different splints could produce different amounts of heat and the type of reactants should stay the same for each experiment.
Materials
Refer to investigation 2.6, identifying mystery gases. Science 9.
Changes: - Apron wasn’t used * A test tube stopper wasn’t used * Tongs weren’t used * Used only one wooden
splint
Procedure
Refer to investigation 2.6, identifying mystery gases. Science 9.
Changes: - Step 7: No tongs were used * Step 11: Test tube stopper was not used
Observations
| Reactants Physical description | Reactions Observations(Physical and Chemical) | Gas Test(s) Performed | Results of gas test Performed | Part1: Hydrogen peroxide & Manganese Dioxide | Manganese -Black Powder- Opaque | The manganese dioxide dissolves in the hydrogen peroxide and bubbles start to form. (Physical) | The glowing splint test | The splint reignited and smoke was created in the test tube | | Peroxide: - Clear liquid- Transparent | | | | Part2: Hydrochloric Acid & Magnesium | Acid: - Clear liquid- Transparent | Bubbles start to form around the magnesium, creating a white thick gas above the magnesium (Physical) | The burning splint Test | A pop occurred as soon as the flame came near the gas. Heat was produced | | Magnesium -Dull- silver - Solid | | | | Part3: Hydrochloric Acid & Sodium Bicarbonate | Acid - Clear liquid- Transparent | Bubbles formed and the sodium bicarbonate dissolved in the hydrochloric acid | The Limewater test | The lime water became cloudy and milky | | Bicarbonate -White Powder-Opaque | | | |
Table1. Observing different reactions caused by different substances and testing the gases produced by them
DATA ANYLASIS 1. The observations of the reactants were recorded first, because it helped to see the effect of the chemical reaction and how it changed the reactant. For example, the manganese dioxide was a powder, but when it was added to the hydrogen peroxide it dissolved in it. 2. A) The gas that was produced for part1 was oxygen because the splint reignited
B) The gas that was produced for part 2 was hydrogen because a pop sound occurred
C) The gas that was produced for part 3 was carbon dioxide because the lime water became milky and cloudy
3. Another indication that you can have is that a flame will go out if it comes near carbon dioxide because, carbon dioxide does not burn and does not allow other substances to burn, so the flame would go out and you would know that this gas is carbon dioxide
Conclusion