Conservation of Matter

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100 grams of cheese is melted in a microwave. How much should the liquid cheese weigh?

30 grams of baking powder and 30 grams of vinegar are placed in a jar with a lid, and the mixture is shaken. How much will the new liquids and gases weigh together?

20 grams of water is poured into a jar with 10 grams of sugar, and it is stirred. How much does the sugar water mixture weigh together?

10 grams of milk is poured into 200 grams of coffee. How much will the milk and coffee weigh together?

If 1 gram of food coloring is dropped into 10 grams of water, the mixture will weigh:

30 grams of vinegar is poured into 30 grams of baking soda in a jar that does NOT have a lid. Why will the new substance that forms weigh less that 60 grams?

30 grams of salt is poured into 100 grams of water. How much will the salt water mixture weigh after the salt dissolves?

A student places an ice cube in a jar and closes the lid. The ice cube weighs 28 grams. The jar weighs 100 grams. The student sets the jar in a window by the sun. How much will the jar and water together weigh after the ice melts in the sun?