Table of Contents
- 1 Which of the following is not a correct inference that you can make about burning gasoline?
- 2 When gasoline burns What evidence shows that a chemical reaction has occurred?
- 3 What happens when hydrogen peroxide breaks down?
- 4 What are the three things necessary to start and maintain a fire?
- 5 What reaction is gasoline?
- 6 What other substances are added to gasoline?
- 7 How does burning gasoline contribute to air pollution?
- 8 How much carbon dioxide does a gallon of gasoline produce?
Which of the following is not a correct inference that you can make about burning gasoline?
Chemical Reactions Test
| Question | Answer |
|---|---|
| Which of the following is NOT a correct inference that you can make about the burning of gasoline – Chemical bonds are broken and others are formed; New substances are produced; The reaction is a physical change. | The reaction is a physical change |
When gasoline burns What evidence shows that a chemical reaction has occurred?
Gasoline burns, reacting with oxygen in the atmosphere, generating light, heat, and converting the carbon-based molecules into carbon dioxide gas and water vapor. When substances combine like this and undergo chemical changes, we say that a chemical reaction has occurred.
What is the burning of gasoline?
Burning gasoline – When we “burn” gasoline, we are combusting it or combining it with oxygen. That’s why engines need a source of oxygen-containing air, and why engines emit carbon dioxide as a by-product of combustion.
Is burning gasoline a physical or chemical property?
Yes, burning gasoline is a chemical change because when gasoline is ignited, water and carbon dioxide are produced.
What happens when hydrogen peroxide breaks down?
It breaks the peroxide down into oxygen and water. And that is why hydrogen peroxide foams when poured onto liver. If you have ever used hydrogen peroxide to disinfect a cut, you may have also noted some bubbling since blood can decompose hydrogen peroxide into oxygen and water.
What are the three things necessary to start and maintain a fire?
Oxygen, heat, and fuel are frequently referred to as the “fire triangle.” Add in the fourth element, the chemical reaction, and you actually have a fire “tetrahedron.” The important thing to remember is: take any of these four things away, and you will not have a fire or the fire will be extinguished.
What evidence show that reaction occurs?
Chemical reactions can be identified via a wide range of different observable factors including change in color, energy change (temperature change or light produced), gas production, formation of precipitate and change in properties.
How are chemical reactions related to chemical changes?
Chemical Changes are also called Chemical Reactions. Chemical reactions involve combining different substances. The chemical reaction produces a new substance with new and different physical and chemical properties. The particles of one substance are rearranged to form a new substance.
What reaction is gasoline?
combustion reaction
In this combustion reaction, we see that the hydrogen from the gasoline combines with oxygen from the air to produce water (H2O). Similarly, the carbon from the fuel combines with the oxygen from the air to produce carbon dioxide (CO2).
What other substances are added to gasoline?
Gasoline contains several other additives including ethanol, methanol, formaldehyde, xylene, 1,3-butadiene, methyl tert-butyl ether (MTBE), and hexane.
How is gas a chemical reaction?
A gas evolution reaction is a chemical reaction in which one of the end products is a gas such as oxygen or carbon dioxide. Gas evolution reactions may be carried out in a fume chamber when the gases produced are poisonous when inhaled or explosive.
What chemical reaction is a gas stove?
In a gas stove, the methane reacts with oxygen molecules from the air to make carbon dioxide and water. The products contain less chemical energy in their bonds than do the reactants. The excess energy is given off as heat and light.
How does burning gasoline contribute to air pollution?
The vapors given off when gasoline evaporates and the substances produced when gasoline is burned (carbon monoxide, nitrogen oxides, particulate matter, and unburned hydrocarbons) contribute to air pollution. Burning gasoline also produces carbon dioxide, a greenhouse gas.
How much carbon dioxide does a gallon of gasoline produce?
Some of the environmental laws in the United States focus on reducing pollution from these sources.? Burning a gallon of gasoline (that does not contain ethanol) produces about 19.5 pounds of carbon dioxide (CO2).
Why did we move away from leaded gasoline?
The move away from leaded gasoline began in 1976 when catalytic converters were installed in new vehicles to reduce the emissions of toxic air pollutants. Vehicles equipped with a catalytic converter cannot operate on leaded gasoline because the presence of lead in the fuel damages the catalytic converter.
How is gasoline used in the United States?
Most consumers use gasoline in cars, light trucks, and motorcycles, but they also use it in small aircraft, boats and other watercraft, and landscaping and construction equipment. Some of the environmental laws in the United States focus on reducing pollution from these sources.