What is mostly commonly found element in the Earth's crust??

Answers

Answer 1

Answer:

Answer:

The most commonly found element in the earth's crust is Oxygen.

Explanation:

The atomic umber of Oxygen is 8.The electronic configuration of oxygen is 2,6.It belongs to the chalcogen family in the periodic table.It is a strong oxidizing agent and highly reactive non-metal.The amount of oxygen present in the earth's crust is 46.6%.The oxygen exists in two forms ,they are $O_{2$ (oxygen) and $O_(3)$ (ozone).The major compound of it exists in the form of silicate minerals where it combines with other minerals.It also exists i the compound as carbonates and phosphates. Oxygen with acetylene is used to cut and weld the metals.In the medical field,Oxygen is used to ease the respiratory disease and it is also used to manufacture the the explosives.

Answer 2

Answer:

Answer:

water/h20

Explanation:

the earth is mostly contained of water

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What is groundwater flow

What must occur before clouds can form?

Answers

Condensation must occur.

condensation of water vapor also the water vapor must lose heat energy

Which of the following is an example of a solution?A.fog
B.soda water
C.milk
D.mud

Answers

Milk is an example of a solution.

If an object has more negative charges than positive charges, the object has an overall

Answers

The object has an overall negative charge.

It will have an overall negative charge.

During an experiment a student measured the temperature of water while it boiled in a pot on a stove. The temperature of the water stayed at 100°C during the entire time that the water was boiling.

Answers

Answer:

The temperature of the water stayed at $100^(0) C$ because the temperature of a pure water does not increase at its boiling point, $100^(0) C$ . This is due to latent heat of vaporisation.

Explanation:

During a change of state of a substance, the temperature does not change due to latent heat of the substance. Latent heat is the amount of heat required to convert a unit mass of a substance from one state to another without a change in its temperature. There are two types of latent heat, latent heat of fusion anf latent heat of vaporisation.

So during the experiment, the water got to its boiling point and continues to boil at this constant temperature until it would change completely to steam at that temperature. After the conversion process, the temperature begins to increase.

The latent heat of vaporisation came into action during the process of boiling the water at constant temperature. That's why the temperature of the water did not increase even after reaching its boiling point ( $100^(0) C$ ).

Answer:

c,interpretation of the data

Explanation:

A good scientific explanation needs to be based on both data collected in an investigation and on the ability to interpret what the data means.

Normally, adding heat energy increases the temperature of a substance. However, during a phase change, the temperature of the substance stays constant. This happens because the heat energy is being used to change the phase of the matter instead of the temperature.

How are characteristic properties of a given substance different from its other properties and chemical properties?

Answers

Answer : The characteristic properties of a substance always remains the same irrespective of the sample being observed is large or small.

Few examples of characteristic properties of any substances includes freezing or melting point, boiling or condensing point, density, viscosity and solubility. They are specific for specific substances and which makes them easily recognizable.

Whereas chemical properties are specific for one substance which chemically transformed into another substances.

The simplest way to put it is that chemical properties is how the substance works with other substances. And characteristic properties are how it's described, like characteristics of a person. Is that helpful? A bit, at least?

When butter is heated it melts and when that melted butter cools and solidifies the process called