The mixing of red paint and yellow paint should yield orange so your pigments must be undergoing a chemical change (the molecule is breaking down and reforming)
Yellow is a primary colour and cannot be created by mixing. Mixing orange and a yellow-green in the right quantities may give a dull amber colour, but that's as near as you'll get.
Mixing the colours yellow and blue produces green. Mixing green to green makes green, but the resulting green will be different from the two greens that entered the mix (assuming they were not identical).
No. Green is a secondary colour because you can create it by mixing other parts of the spectrum. The primary colours are Red, Yellow, and Blue. You can mix yellow and blue to make green.
It depends on the color you want to make...For example, red + blue = purple yellow + red = orange red + white = pink green + yellow = blue yellow + blue = green
Any combination of the tree primary colours will result in some form of brown. As purple is red & blue and you want to add yellow you will get some variation of brown.
Yes, a colour change indicates a chemical change.
chemical
Physical, Because The Color Changes.. Not The Chemical Property Of The Paper.. :)
It is a chemical change because the sodium(Na) is a liquid that forms with a yellow gas, chlorine(Cl), which changes the physical state to a dickmuncher solid, but ultimately they reacted with each other chemically to form salt (NaCl). It does change the physical state, but it is more of a chemical reaction.
Physical (I'm pretty sure). If there is no change in the formula/chemical makeup/etc. then the change is purely physical. If the newspaper ceased to be a newspaper and became something else, then it would be chemical.
It is a physical change. I goes from white, to yellow, back to white.
This would be a chemical change.
It is a chemical change because the sodium(Na) is a liquid that forms with a yellow gas, chlorine(Cl), which changes the physical state to a dickmuncher solid, but ultimately they reacted with each other chemically to form salt (NaCl). It does change the physical state, but it is more of a chemical reaction.
chemical
A there are physical changes but, if you know the 4 chemical changes, anything else is a physical change.OxidationBurningHeat changeBubbling (not boiling)
Its colour, its melting point, its boiling point, whether it is magnetic or not, whether it is an electrical conductor or not and its atomic mass are all physical properties.
physical (because you can observe it without inducing a chemical reaction).