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12 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What 3 things happen in chemical change? |
-New substance made -Process irreversible -Energy change takes place |
NPE |
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Why do eggs and meat change texture when cooked? |
Protein molecules permanently change shape. Denaturing. |
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Why are potatoes easier to digest when cooked? |
-Cell walls rupture -Loss of rigid structure -Softer texture
-Starch grains swell and spread out |
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Which food additives... -stop food reacting with oxygen -improve colour -help oil and water mix |
-Antioxidants -Food colouring -Emulsifiers |
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What are the two parts of an emulsifier? |
Hydrophilic and hydrophobic |
H and H |
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Which part of the emulsifier loves water and which part hates it? |
-Hydrophilic loves water -Hydrophobic hates water, but loves fat and oil |
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What does baking powder contain? |
Sodium hydrocarbonate |
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What does baking powder contain? |
Sodium hydrocarbonate |
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What is the word equation for this? |
Sodium hydrocarbonate -> sodium carbonate + carbon dioxide + water |
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What does baking powder contain? |
Sodium hydrocarbonate |
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What is the word equation for this? |
Sodium hydrocarbonate -> sodium carbonate + carbon dioxide + water |
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What is the symbol equation for this? |
2NaHCO3 -> Na2CO3 + H2O + CO2 |
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