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Assuming that the cookies have flour, eggs, sugar, and a touch of baking soda or baking powder.
The heat will:
> Cause the protein in the eggs to firm up ( it is much like polymerization of a plastic), This is what holds the cookie together
> The sugar and starch will react with oxygen in the air...this
is what gives the cookie a brown color ( too much oxidation and you have burnt cookies!)
The baking powder or baking soda ( depending on recipe) will cause the cookie to rise by releasing carbon dioxide....the
same gas in soda. Baking soda
will need something acidic (tart tasting =
acidic) to start the reaction..like
buttermilk.
Baking powder only needs the presence of a liquid. Double acting baking powder releases carbon dioxide when it comes in contact with a liquid and then again when exposed to heat.
A little thought about this will indicate that if you let a batch of cookie dough sit around all (or
at least most) of the carbon dioxide will work its way out and you will have flatter cookies than if you made them right away.
What else can I help you with?
Is cookies baking a chemical or a physical change?
Baking cookies is a chemical change.
Is baking cookies physical or chemical change?
Baking cookies is a chemical change.
Is baking cookies a chemical or a physical?
Baking cookies is a chemical change.
When cookies baking gives aff a sweet smell is it a chemical change?
Yes, the smell of sweet cookies baking is due to a chemical change. During baking, the sugar in the dough caramelizes, creating new aroma compounds through a chemical reaction. This change is irreversible and contributes to the delicious scent of fresh cookies.
Is baking a cookie a physical change?
no,it is a chemical change because the cookies change shape and smell,don't they?
Is baking cookies a chemical change?
Baking a pie is a chemical change because the cells of the ingredients are broken down when they get hot. You can see this when the crust becomes firm or the fruit in a pie becomes soft.
Baking cookies is a chemical reaction?
Yes, yes it is.
Does heat prevent a chemical change?
Maybe. Certain chemical changes require a certain temperature range. More commonly, heat causes a chemical change, sometimes too soon. Example, you don't want to set unbaked cookie dough on top of the stove while baking cookies because the increase in temperature can activate the chemical reaction of the baking soda before the cookies are in the oven cooking, thus resulting in flat cookies from the rest of the dough.
Is baking a cake a physical or chemical change?
Baking is a chemical change.
Is baking homemade cookies an example of chemical energy?
Yes, baking homemade cookies involves converting chemical energy in the ingredients (flour, sugar, etc.) into thermal energy to make the cookies rise and become crispy or chewy.
Is baking a physical or chemical change?
pretty sure its a chemical change.
Which of the folowing is a chemical change A. you melt butter B.you make cookies C.you make a pitcher of orange juice from concentrate D.you blow up a balloon?
B. Making cookies involves a chemical change because the ingredients undergo a chemical reaction during baking that results in the formation of a new substance with different properties (the cookies).
