No it's a chemical change as you can't 'untoast' the bread.
no
slicing it
Too many. Stay away from breads. = Carb Content of Bread = Please Note: all carbohydrate values are approximate Bread (serving size)Carbs (g)Wheat bread (1 slice)12gRye bread (1 slice)15gPumpernickel bread (1 slice)12gPita bread, white (6" diameter)33gPita bread, whole wheat (6" diameter)35gMixed grain bread (large slice)15gItalian bread (large slice)15gSourdough (large slice)18gFrench bread (5")18gVienna bread (5")18gGranary bread (100g)46gMalt bread (100g)57gWholemeal bread (100g)42gCiabatta bread (100g)20g
Bread is organic, therefore it contains Carbon and Hydrogen. When bread is heated is burns which releases Carbon (black), Carbon dioxide, Carbon monoxide, and water vapour.
It is changing from a solid to a liquid, which is a physical change.
Physical, because each slice of pellet is still the same chemically: you have merely divided your one sodium block into two blocks of sodium. If it were chemical, some kind of notable chemical difference would have occurred (you would no longer have sodium, but something else).
Slicing bread is a physical change, because each slice of bread has the same chemical composition as it had before it was sliced.
No - you'll just have crunchier toast.
1. take a slice of bread out of the packet. 2. Put it in the toaster. 3. Wait.
This is a physical change: the bread is not being chemically altered, and would have the same nutritional value whether eaten from the loaf or the slices. It would, however, be difficult to exactly reverse this physical change because of the nature of the product.
slicing it
Since it is the heat from the bread that causes the butter to change form (melt), and be absorbed by the bread, this should be classified as a chemical reaction.
everyone has slice of bread well.....not every one but i do have slices of bread!:-)
in one slice of the bread there would be over 90Kj
negative
According to the United States Department of Agriculture, one slice of banana nut bread contains about 217 calories. This may vary depending where you bought the bread (i.e. grocery store, homemade, restaurant)
The Esperanto words for slice of bread and slice of pizza are trancajo da pano and trancajo de pico.
It is a chemical change - oxidisation.