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Is less gasoline that remains in the gas tank as carbon dioxide physical change or chemical change?
The molecules are being altered so it is chemical change.
Is it a chemical or physical change when energy in food molecules is transferred into molecules of ATP?
Chemical change.
Is dissolving carbon dioxide in water a physical or chemical change?
It's a physical change because carbon dioxide still has it's same properties. It is not changed.Added:Even if you dissolve it in water it is still there thus making it a physical change and not a chemical change. If it were a chemical change then it would be changed for example, fire or burning things like logs and so forth. Dissolving something in water is not changing it completely it only has a minor change in how you see it, thus it is a physical change.The only 'chemical' change might be considered to be the protolysis of water being slightly enhanced by the hydrogen bonding to carbon dioxide molecules. But that is more a (very weak) 'chemical' change of water molecules rather than of CO2 molecules:(CO2)aq + 2 (H2O)l > (Cl-)aq + (H3O+)aq
When carbon dioxide comes from the fuel of the car is it a physical or chemical change?
chemical change
Is burning a sheet of paper a chemical change?
Yes! Burning anything is a chemical change because what was burned is now turned in ash, carbon, or some other type of material that is wasn't before, thus a change!
Is less gasoline that remains in the gas tank as carbon dioxide physical change or chemical change?
The molecules are being altered so it is chemical change.
When carbon dioxide in air converts to more complex molecules by plants during photosynthesis is that a physical change?
chemical
Is it a chemical or physical change when energy in food molecules is transferred into molecules of ATP?
Chemical change.
Is starch molecules that are formed from smaller glucose molecules a chemical or physical change?
The changing of extra glucose into starch is a chemical change.
What does chemical change produce?
After a chemical change new molecules are obtained.
Is the breaking down of molecules a chemical or physical change?
It is a chemical change.
Is dissolving carbon dioxide in water a physical or chemical change?
It's a physical change because carbon dioxide still has it's same properties. It is not changed.Added:Even if you dissolve it in water it is still there thus making it a physical change and not a chemical change. If it were a chemical change then it would be changed for example, fire or burning things like logs and so forth. Dissolving something in water is not changing it completely it only has a minor change in how you see it, thus it is a physical change.The only 'chemical' change might be considered to be the protolysis of water being slightly enhanced by the hydrogen bonding to carbon dioxide molecules. But that is more a (very weak) 'chemical' change of water molecules rather than of CO2 molecules:(CO2)aq + 2 (H2O)l > (Cl-)aq + (H3O+)aq
How do you get oxygen to a space station?
They have oxygen generators with catalysts that change the chemical structure of the air molecules that pass through them , converting carbon molecules into oxygen ; that's how the get oxygen to a space station...
A change in matter that results in the formation of a new substance with different properties?
I assume you're asking for clarification about chemical reactions. I'm sure you know that individual atoms are not changed (short of nuclear or quantum effects, which are far deeper than Chemists take things). A substance is made up of particles consisting of a specific arrangement of these atoms, called molecules. A chemical reaction is a rearrangement of the atoms, creating a different collection of molecules. This alternate arrangement will have different properties than the original molecules. For example, when burning sugar, there is a reaction between the sugar molecules (consisting of carbon, hydrogen and oxygen) and the oxygen molecules in the air. This reaction rearranges these molecules to create carbon dioxide and water (more correctly, water vapor, since the flame is hot). The reaction takes all of the carbon from the sugar and some of the oxygen (from both sources) to create carbon dioxide and all of the hydrogen from the sugar and the rest of the oxygen to create water molecules. The properties of these common molecules are well known and differ from each other significantly.
What does chemical produce?
After a chemical change new molecules are obtained.
What An interaction of two or more molecules to create a chemical change?
chemical
Is dissolving carbon dioxide in water a chemical or physical reaction?
Dissolving CO2 in water would be a physical reaction because neither the CO2 molecules, nor the H2O molecules are undergoing any change.
