Ice is less dense than water. When liquid water freezes, it’s particles expands i.e increases in volume. Hence, it becomes less dense than water. This causes an iceberg to float on water because it has a lesser density compared to the liquid water caused by an expansion of its particles .
Which best explains the high surface tension in water?
Water expands and becomes less dense when it freezes. Which best explains the high surface tension of water? ... Water molecule has a bent shape .
Which statement best explains waters ability to dissolve covalent compounds?
Water has greater surface tension than ethanol. Which statement best explains water’s ability to dissolve covalent compounds? Water can dissolve polar covalent compounds through dipole-dipole interactions .
Which role of water is significant for most living things in biological system?
Which role of water is significant for most living things in a biological system? It provides temperature regulation .
Which best explains why water has a high specific heat?
water molecule has a bent shape. Which best explains why water has a high specific heat? Hydrogen bonds increase the amount of energy that is required for the temperature to change. ... Water absorbs a lot of energy from the skin due to its high specific heat .
What is a real world example of surface tension?
Walking on water : Small insects such as the water strider can walk on water because their weight is not enough to penetrate the surface. Floating a needle: A carefully placed small needle can be made to float on the surface of water even though it is several times as dense as water.
Why does salt water have a higher surface tension than water?
The salt water has a much lower cohesion than plain water so it’s attractive forces are less than plain water. The surface tension does increase when the salt is added to the water so that means that the penny drop experiment is mostly affected by the water’s cohesive forces.
Which of these best explains why a paper clip can float on water 2 points?
The high surface tension helps the paper clip – with much higher density – float on the water. The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension.
Which statement best explains why water is known as the universal solvent?
Water is called the “universal solvent” because it is capable of dissolving more substances than any other liquid . This is important to every living thing on earth. It means that wherever water goes, either through the air, the ground, or through our bodies, it takes along valuable chemicals, minerals, and nutrients.
Which of the following best explains why water is cohesive?
Cohesion refers to the attraction of molecules for other molecules of the same kind, and water molecules have strong cohesive forces thanks to their ability to form hydrogen bonds with one another .
Why is adhesion important to life?
Cohesive and adhesive properties of water impact living things in many ways: ... Adhesion allows for water to move against gravity through plant cells . Capillary action owing to adhesion allows blood to move through tiny vessels in some animal bodies.
Why the presence of water is important to life?
Liquid water is an essential requirement for life on Earth because it functions as a solvent . It is capable of dissolving substances and enabling key chemical reactions in animal, plant and microbial cells. Its chemical and physical properties allow it to dissolve more substances than most other liquids.
Is water a non living thing?
Some examples of non-living things include rocks, water, weather, climate, and natural events such as rockfalls or earthquakes. Living things are defined by a set of characteristics including the ability to reproduce, grow, move, breathe, adapt or respond to their environment.
What are the advantages of high specific heat capacity of water?
This is why water is valuable to industries and in your car’s radiator as a coolant. The high specific heat of water also helps regulate the rate at which air changes temperature , which is why the temperature change between seasons is gradual rather than sudden, especially near the oceans.
What material has the highest heat capacity?
Liquid water has one of the highest specific heat capacities among common substances, about 4184 J⋅kg − 1 ⋅K − 1 at 20 °C; but that of ice, just below 0 °C, is only 2093 J⋅kg − 1 ⋅K − 1 . The specific heat capacities of iron, granite, and hydrogen gas are about 449 J⋅kg − 1 ⋅K − 1 , 790 J⋅kg − 1 ⋅K − 1 , and 14300 J⋅kg − 1 ⋅K − 1 , respectively.
Why is specific heat important to life?
A high specific heat of a substance means that a large amount of heat is required to raise the temperature of the substance . ... A relatively constant temperature without spikes and drops is essential to sustain life, as most organisms require temperatures to remain within a narrow range for their survival.
