1.Why is understanding how the freezing point of water changes important? The concept of freezing point depression is useful in applications where water needs to be kept liquid, especially in the use of antifreeze in combustion engines operating at freezing temperatures. / Knowing the freezing point of water, gives more knowledge on liquid to solid transition.
2.Why does water freeze in the first place? Because at the temperatures it is more energetically favorable for the atoms to arrange themselves in a lattice than it is for them to pack into a liquid.
3. How does the sugar affect the freezing point of water? The freezing point of water will be lowered when sugar is added. Salt will lower the freezing point further than sugar, which is one of the reasons the government prefers to put salt on roads during the winter. This is a well-known phenomenon called freezing-point depression.
Thermodynamically, at the freezing point the chemical potential of the liquid and solid phase will be equal. Adding solute (here sugar) will modify the chemical potential of the liquid through both entropic and enthalpic interactions. From an entropic standpoint, the solution will have a higher entropy.
4.How is the freezing point of water changed? The temperature may be lower if supercooling occurs or if there are impurities present in the water which could cause freezing point depression to occur. https://www.thoughtco.com/the-freezing-point-of-water-609418
5.How do you measure the change in freezing point? You use thermometers to see the contrast between pure water’s freezing point and the new mixtures freezing point.
6.How is sugar used on freezing water?
7.Who discovered the freezing point of water? Anders Celsius was the first to perform and publish careful experiments seeking to define an international temperature scale based on scientific grounds. In 1742, he proposed a temperature scale based on the boiling and freezing points of water, which was the reverse of the scale now known by the name ‘Celsius’. https://www.thefamouspeople.com/profiles/anders-celsius-5555.php .
8.Who would have need of this information?
9.Who were some early scientist involved in the study of matter? Antoine Lavoisier- determined the Law of Conservation of Matter by extensive experimentation Democritus- first proposed the idea that all matter was made up of tiny indivisible particles called atoms John Dalton. Formulated an atomic theory of matter with 4 postulates:Elements are composed of small particles called atoms. All atoms of a given element are identical. *Atoms are neither created nor destroyed in chemical reactions. Compounds always contain the same proportion of elements.https://quizlet.com/7001524/atomic-theory-scientists-and-their-contributions-flash-cards/
10.What is the freezing point of water? Ordinarily, the freezing point of water and melting point is 0 °C or 32 °F.
11.What temperature did the water freeze at when sugar was added?
Look at graph
12.What do we use sugar in freezing water for?On a roadway, this means that if you sprinkle salt on theice, you can melt it. The salt dissolves into the liquid water in the ice and lowers its freezing point. the highway department spreading salt on the road to melt the ice.
13.When does the freezing point change when sugar is added? The more sugar added, the lower the freezing point due to that it was more difficult for the cups with the most sugar to freeze.
14.When was the freezing point discovered? In 1742, he proposed a temperature scale based on the boiling and freezing points of water, which was the reverse of the scale now known by the name ‘Celsius’
15.Where would the sugar with freezing water be applicable to use.
16.Where would you find the freezing point in the world?