It first starts as yellow with only the indicator in the water, but when the magnesium is added, it turns green, then blue, and lastly purple
pH 5.6
Green
it turns red
green
red?
red
pH 5.6
Green
green
it turns red
green.
red?
Light green.
green
Copper oxide will turn blue or purple when Universal Indicator is put on it.If you found this helpful, please rate me :)
Bright red and the colourless
weak acid = orange/yellow