There are tiny bubbles of air trapped in the dough. As the dough rises the bubbles expand into the holes you refer to.
it is a gas.the best example for gas in solid is bread.
(u can type this questions in Yahoo answers so u can get more information)
Bubbles in bread are caused by the yeast eating the bread dough and then the yeast passes gas and created a little microscopic bubble and that happens over and over again causing bubbles
The Bubbles are carbon dioxide
Sometimes the air isn't pressed out of the dough when you shape the loaves or the dough rose to long before you baked it.
carbon dioxide
harmless bacteria inside of the bread
check the gas line for holes
Oxygen
Generally, no. That's what makes it a solid. Unless of course the solid has holes in it.
Yeast added to bread dough produces a gas, and this causes the dough to rise, making the finished bread look like a sponge.
Making bread involves a step called leavening (usually), and that's the part of the operation where your question regarding bread making chemistry is pointing. A leavening agent causes gas to be produced. Be sure to read enough to differentiate the effect of steam (created inside the dough mass) on the finished bread from leavening. Point your cursor to the link and surf on over to our friends at Wikipedia to get the straight scoop. These folks are down with it.
While bread dough is proofing, it ferments and produces gas pockets, which are the holes that you see.
Bread gets big holes through the fermentation process. This process produces bubbles of carbon dioxide within the grain of the bread, thus causing holes.
The holes are gases from the yeast eating the sugar in the dough. These bubbles are what makes the bread light rather than solid like a cracker. As much as it may seem a bit gross, the gas is essentially yeast farts!
The freshly-baked bread contains a lot of moisture. If the bread is to wrapped very soon after baking, the holes are made in order to allow the moisture to decrease without leaving the bread soggy. Those companies that wrap the bread in bags without holes, have allowed it to cool off first.
Breads have holes in them because they emit carbon dioxide in the bread. The carbon dioxide expands more than the air and water in the bread, thus making large holes.
Bubbles in bread are caused by the yeast eating the bread dough and then the yeast passes gas and created a little microscopic bubble and that happens over and over again causing bubbles The Bubbles are carbon dioxide
Dough of bread contains yeast. Yeast reacts with sugar to give water and Carbon Dioxide (CO2). After baking CO2 escapes from dough which makes holes to bread.
its bcuz air is enterning the bread..!! then it makes the bread rise and air bubbles or aka holes
Yeast reacts with sugar to produce Carbon Dioxide gas. This makes the dough rise (and produces the 'holes' you see when you slice into a loaf).
Carbon dioxide
Holes in your loaf of bread.
Yeast grows in the bread dough, eating the sugars, and producing (among other things) carbon dioxide waste. Since the carbon dioxide is a gas, it gets trapped in the dough, forming pockets of gas -- the holes in bread. Depending upon the type of bread one is making, you may punch down the dough -- net effect is you end up with smaller pockets of gas, this is typical of sandwich breads. If you do not, you will end up with larger pockets -- typical of "French bread". Cooler temperatures will require a longer time to get the bread to rise. You can read more in many books on bread