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O molecules are present in a given volume. So if you take two, 1-liter bottles and fill one with hot water, and the other with cold, th e cold water bottle will be noticeably heavier. In the hot water, the molecules are spaced farther apart, so there are fewer molecules in any given volume, and therefore less mass. Energy As the energy in liquid water increases (as its temperature increases) the molecul es vibrate at a greater rate, and need to space farther apart from each other. This is what density refers to, and this is why the hott DietBet er the water, the lighter it is. Conducting an Experiment There is an experiment that can be performed to prove these concepts empirica lly. First, take two identical 1-liter (or 2-liter) bottles and place them on a weight balance. Zero the scale so that the two water bo alcohol based aftershaves ttles balance each other. Then take cold water (you can put it in a refrigerator to cool it) and fill one water bottle with it. Make su .
that the volume of water is the same. Then place the bottles back on the weight balance and the cold water will dip down, proving that it is heavier than the hot water. Misconceptions Despite cold water being heavier than hot water, if you take hot water and cool it, i t will not become heavier. This is because as the water cools, it's volume will shrink proportionately to the amount of heat lost. This makes sense, since the weight is determined by the amount of H20 molecules present, and by cooling the water you are not adding any ex wordpress templates twitter tra molecules. Surprisingly, the water will actually get lighter (although not significantly). This is because energy equates to mass ( E=MC^2) and therefore energy has weight. By cooling the water you are taking away energy, and therefore, mass. Ice Interestingly enough alcohol based aftershaves , despite cold water being heavier than hot water, ice is actually lighter. This is why icebergs float. The reason behind this is that .
stain life. If ice sank, the oceans would slowly freeze, because instead of ice rising to the surface and slowly melting (by being clos er to the sun) the ocean floor would freeze. The ice floor would creep up to the surface (because in the deep ocean there is little sun light to warm the water) eventually freezing the whole ocean.Pots and Pans Every kitchen should have at the very least a small frying p an, a 2 qt. saucepan and a larger pot to for soups and pasta. Buy smaller pans if your will mostly be cooking for one, or buy larger po contact log template free ts if you plan to feed a family. Purchase at least one stainless steel, glass or enameled baking dish or casserole pan. Pots and pans s hould be made of stainless steel or have an enamel coating. If you enjoy cooking, also invest in a saut¨¦ pan and a steamer. Utensils I alcohol based aftershaves n addition to the forks, knives and spoons that you will require for everyday eating, purchase several cooking knives. Buy a small pari .
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