C1:11 Cooking Flashcards
1
Q
What are the signs that a chemical reaction has taken place?
A
a new substance is made
the change is irreversible
an energy change happens.
2
Q
What happens to proteins when they are heated?
A
the become denatured
3
Q
What happens when a potato is cooked?
A
the cell walls break. This makes the potato lose its rigid structure and become softer. IT also releases the starch grains trapped inside. These absorb water and swell up. Cooked potato is easier to digest than raw potato.
4
Q
What is the balanced symbol equation for the thermal decomposition of sodium hydrogencarbonate?
A
2naHCO3==>NA2CO3 +H20+CO2
