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Physical and Chemical changes of Cooking Food

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Christian Gonzalez

on 13 May 2013

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Transcript of Physical and Chemical changes of Cooking Food

Cooking Food with Physical and Chemical
Changes. Christian Gonzalez Vocabulary Chemical Changes: A irreversible chemical reaction
involving the rearrangement of atoms of one or
more substances.

Physical Changes: A physical change is a type of change in which the form of matter is altered but
one substance is not transformed into another.

Change: The act or instance of making or becoming different Chemical changes How does bacon change
color when cooked? A chemical reaction
happens when you
cook bacon.
The heat causes a rearrangement
of atoms causing its color to change. How does meat change color when you cook it? Cooking meat is a chemical change. Proteins in the meat are broken down by the heat caused in a pan,oven or a grill and this causes it to be a chemical reaction. It changes its color from a very light color to a dark or very dark color The change of pizza crust when put inside an oven Chemical Aspects: The base of the pizza is flour and yeast, so the reaction between them is a chemical change. The cooking of the pizza is
also a chemical reaction, because it can't be
undone. Physical changes
when cooking
Food It is a physical change because water's chemical make-up hasn't changed. Ice is still water and can then be changed back into its liquid form
and water can be refrozen to solid ice. Is Turning Water into ice a
Physical Change? Putting noodles in
boiling water. It is a physical change because it changes the texture of a noodle Is cooking scrambled eggs
a physical or chemical change? It is a chemical
change!!!! WHY? It changes
texture and color when cooked but you can't put it back into the egg it
originally was Why is it so important
to learn this? It's important to learn
this because it is the
science of how food
changes chemically
and physically due
to hot and cold
Human Ingenuity Unit Question:
What are the chemical and
Physical changes of food?
3 STAAR Questions 1.Which one of these is a chemical change:
A: Egg changing its color B: Cupcake changing its color
C: A piece of turkey shrinking D: Both B and C 2.Which is a physical change?
A: Water turning into ice B: Turkey overcooked and it's shrinking
C: Cupcake getting bigger when in an oven D: All of the above 3.Cooking scrambled eggs is a...
A: Physical Change B: Revolutionary Change
C: Chemical Change D: Channel Change
1 is A
2 is D
3 is C Bibliography
"Physical and Chemical Changes." Physical and Chemical Changes. N.p., n.d. Web. 12 May 2013.
BBC News. BBC, n.d. Web. 12 May 2013.
"Chemical & Physical Changes." About.com Chemistry. N.p., n.d. Web. 12 May 2013.
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