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Why do crushed ice has a larger surface area that is exposed to the air?
Wiki User
∙ 9y ago
A simple example is to take 1 ice cube, which has 6 sides. Neatly cut the cube into 4 quarters (4 cubes). There are now 24 sides of the original single ice-cube exposed to the air, so melting should increase.
Wiki User
∙ 9y ago
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Why is salt crushed before it is added into water?
So that there is more surface area on the salt exposed to the water and therefore reacts faster.
Which has a larger surface area powder or lumps?
A powder has a larger surface area.
What are the 5 factors that can affect the rate of a chemical reaction?
Chemists can control rates of reactions by changing factors such as surface area, temperature, and concentration, and by using substances called catalysts and inhibitors.A:Temperature, Concentration of the reactants, Catalyst, Surface area, the nature of the reactants, residence time and Pressure. A:But I have to clear this about the surface area factor to all.Heat IS a catalystOr the more the surface area exposed, the faster the rate of reaction?In my reference books and certain websites,the larger the surface area exposed, the fasterthe rate of reaction is stated.In my opinion, the correct one should be,the more the surface area exposed, the faster the rate of reaction.To support my opinion, this is my explanation;Hypothesis(my text/reference books) : The larger the surface area exposed,the faster the rate of reaction.The larger the surface area means thatthe bigger the size of the reactants.Let me take a cube, Cube A with 4cm sides.1 cube has 6 surface area exposed.4 x 4 = 16cm² ; 1 surface area is 16cm². [Larger surface area,but slower rate of reaction.= Doesn't support hypothesis.][Total surface area.]6 x 16cm² = 96cm²Now let me cut Cube A(same cube as before) into 4 equal pieces.Now there are 4 cubes; let each cube be Cube B.Then, each Cube B will be 2cm per side.2 x 2 = 4cm² ; 1 surface area is 4cm². [Smaller surface area,but faster rate of reaction.= Doesn't support hypothesis.][Total surface area of 1 Cube B.]6 x 4cm² = 24cm²[Total surface area of 4 Cube B's.]24cm² x 4 = 96cm² (To show that both cubes have the same mass.)Conclusion : The larger the surface area exposed, the slower the rate of reaction.Hypothesis is not accepted.If you use the term, larger in this condition,it is wrongly used.Hypothesis(my text/reference books) isthe larger the surface area exposed, the fasterthe rate of reaction.As we all know,the cube with the larger surface area exposed will react slowerthan the cube with the smaller surface area.Into my opinion, the more the surface area exposed, the faster the rate of reaction.I am describing the surface area exposed in terms of amount instead of size.Hypothesis(my opinion) : The more the surface area exposed,the faster the rate of reaction.Taking the same cubes, Cube A and Cube B's as mentioned above,Cube A ; 6 surface area exposed. [Less surface area exposed,slower rate of reaction.]Cutting Cube A into 4 equal pieces = 4 Cube B's.(1 Cube A = 4 Cube B's.)1 Cube B ; 6 surface area exposed.4 Cube B's ; 6 x 4 cubes = 24 surface area exposed. [Moresurface area exposed,faster rate of reaction.]Conclusion : The more the surface area exposed, the faster the rate of reaction.Hypothesis is accepted.it is temperature in general. not just heat. heat may be a catalyst but cold is not.
Why are we able to sip hot tea or milk faster from a saucer rather than a cup?
Because the rate of evaporation depends upon the surface area exposed to the atmosphere. The surface area of a saucer is greater than that of a cup which makes it easier for tea to evaporate rapidly which thereby makes the tea cool.
Explain why large crystals of coarse sea salt take longer to dissolve in water than crystals of fine table salt?
The smaller crystals have more surface area exposed to be dissolved. Since the larger crystal has a bigger volume to surface area ratio, it will take longer to dissolve it all.
Why does crushed ice melt fast?
Crushed ice melts faster because it has a larger surface area exposed to the air.
How does the area of exposed surface affect evaporation?
The larger the exposed surface area - the faster evaporation occurs.
Which will melt faster an ice cube or crushed ice?
Crushed ice since their is a greater surface area exposed.
Why does crushed ice melt faster than cubed?
let me put it in a simple way you crush it which makes it smaller so it melts quicker
Why is crushed ice better than larger chunks of ice?
more surface area.
What is size of solute?
It is the amount of surface of a solute that is exposed to the solvent. The smaller the pieces of the solute are, the larger the surface area that is exposed to the solvent.
Does cubed or crushed ice melt faster?
Crushed ice melts much faster than cubed because crushed ice is smaller. Crushed ice melts faster because it has a larger surface area exposed to the air or liquid its in. It is also less dense and will be more subject to temperature change because of it.
Why does water evaporate when the water is spread over a larger surface?
The area exposed to evaporation in the atmosphere is larger.
Why is salt crushed before it is added into water?
So that there is more surface area on the salt exposed to the water and therefore reacts faster.
How does the size of an exposed rock affect its rate of weathering-?
When rocks are larger, the surface area is more exposed making the rate of weathering greater.
Do lungs have a large exposed surface area?
Your lungs have very large surface area. About 100 square meters or 1100 square feet.
Which melts fastercrushed ice or ice cubes?
Yes because crushed ice has a greater surface area to volume ratio that a cube of ice. The greater this ratio the faster heat energy is transfered to the frozen water this then causes the particles within the ice to vibrate faster so the ice turns into water faster.
