Question

Which procedure could be used to demonstrate that matter is conserved
during a physical change? *

1. Find the mass of an apple. Cut the apple and remove the core. Find the mass of the
Remaining apple.

2. Find the mass of a piece of ice. Let the ice melt. Find the mass of the liquid water.

3. Find the mass of a cup of water. Boil the water. Find the mass of the water that
remains.

4. Find the mass of a raw egg. Cook the egg. Find the mass of the cooked egg.

Answer 1

Answer:

Undercooking and cross-contamination are the two biggest risks posed by meats. Wash your hands; keep raw meat away from other ingredients; and cook chicken, beef, pork and turkey to safe temperatures. The CDC recommends using a cooking thermometer, though Griffin acknowledges that not everyone has one or uses it regularly.



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Safe minimum cooking temperatures

• Ground beef, pork, veal, lamb: 160 degrees

• Ground chicken, turkey: 165 degrees

• Steaks, roasts, chops: 145 degrees

• Poultry: 165 degrees

• Fresh pork, ham: 145 degrees

• Precooked ham: 165 degrees

• Egg dishes: 160 degrees

• Leftovers, casseroles: 165 degrees

• Fish with fins: 145 degrees

Source: Foodsafety.gov

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