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dexar [7]
3 years ago
14

Why is the outside of a fridge freezer white and shiny?

Biology
1 answer:
Mila [183]3 years ago
7 0
To reflect beat away from the fridge.... it also keep the fridge cooler
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Use the following words in a sentence (seperatley please)- volume, and meniscus.
QveST [7]
Volume - the amount of something in a three-dimensional area.
Meniscus - the curve that a liquid makes at the surface from surface tension.

I measured the volume of water in the container.

The water formed a meniscus near the top of the container.
4 0
3 years ago
Explain the thermal properties of water
Zinaida [17]

Answer:

A glance of earth taken from space will depict it blue. This blue colour is actually water, the major part of the earth is covered with water. We need water for almost everything, for example- drinking, bathing, cooking etc and therefore we should know about the properties of water. 65 % human body is composed of water. Water is essential for the survival of life on earth. Water is distributed unevenly on the earth’s surface. It forms a major solvent and dissolves almost every polar solute. So let us have a look at its properties.

Physical properties of water : Water is a colourless and tasteless liquid. The molecules of water have extensive hydrogen bonds resulting in unusual properties in the condensed form. This also leads to high melting and boiling points. As compared to other liquids, water has a higher specific heat, thermal conductivity, surface tension, dipole moment etc. These properties form the reason for its significance in the biosphere. Water is an excellent solvent and therefore it helps in the transportation of ions and molecules required for metabolism. It has a high latent heat of vaporization which helps in the regulation of body temperature

Chemical properties of water: Amphoteric nature:

Water can act as both acid and base, which means that it is amphoteric in nature.

Example:

Acidic Behaviour: H2O(l)+NH3(aq) ⇌ H3O+(aq)+NH+4(aq)

Basic Behavior: H2O(l)+H2S(aq) ⇌ H3O+(aq)+HS−(aq)

Redox reactions:

Electropositive elements reduce water to hydrogen molecule. Thus water is a great source of hydrogen. Let us see an example in this case:

2H2O(l)+2Na(s)→2NaOH(aq)+H2(g)

During the process of photosynthesis, water is oxidized to O2. As water can be oxidized and reduced, it is very useful in redox reactions.

Hydrolysis reaction

Water has a very strong hydrating tendency due to its dielectric constant. It dissolves many ionic compounds. Some covalent and ionic compounds can be hydrolyzed in water.

Explanation:

7 0
2 years ago
5. All the living things on Earth form the ______
agasfer [191]

Humans Come From A Guy Sperm It Goes Into The Females Egg

6 0
3 years ago
Read 2 more answers
Is it A) B) C) D) ? Some help please
Alex_Xolod [135]
C.) Thymine, Guanine Guanine and Cytosine

I hope this helps.
7 0
3 years ago
Are elephants classified sexual or Asexual?
SIZIF [17.4K]
Answer:  "sexual" ; in the sense that they reproduce "sexually" —and NOT asexually.
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