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3 years ago

Compare the physical and chemical properties of a compound to those of the elements of which it is composed

Biology

1 answer:

zepelin [54]3 years ago

6 0

Answer:

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water $H_2O$

$2H_2O(l)\rightarrow 2H_2(g+O_2(g)$

Physical property is defined as the property of a substance which becomes evident during physical changes. Water is liquid at room temperature whereas hydrogen and oxygen are gases at room temperature.

Chemical property is defined as the property of a substance which becomes evident during chemical changes. Water reacts with metals to form bases, hydrogen reacts with metals to form hydrides and oxygen reacts with metals to form oxides.

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Vitek1552 [10]

Answer:

Explanation:

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3 years ago

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You arrive on the scene to find a scuba diver on board a boat slumped over in the captain's chair with frothy blood in his mout

kondor19780726 [428]

Answer:

Air embolism

Explanation:

When bubbles of air or any other gas cause a blockage of blood vessels in the circulatory system then this is known as air embolism.
There are several symptoms that are associated with this condition such as loss of consciousness, difficulty in breathing, bloody sputum, tremors, convulsions, etc.
Since in the given condition, the diver is having frothy blood in his mouth and since he ascended rapidly calling for help he is most likely to be suffering from an air embolism.

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3 years ago

true or false? to make a person breathe in, the volume of the chest cavity must decrease, creating a higher pressure in the thor

faltersainse [42]

The thorax is a very vital and important organ in the human body.

It is a structure that serves as a protective covering for organs in the body such as the lungs, the heart, some vital blood vessels e.t.c

It is false that to make a person breathe in, the volume of the chest cavity must decrease, creating a higher pressure in the thorax.

When a person breathes in, the chest cavity expands (the volume increases) and the pressure in the thorax decreases.

When a person breathes out, the chest cavity decreases in size, and the pressure in the thorax increases.

Therefore, we can see that the process of breathing in humans, follows the principle of Boyle's Law.

Boyle's law states that as the volume increases there is a decrease in pressure and as the volume decrease there is an increase in pressure.

Therefore, It is false that to make a person breathe in, the volume of the chest cavity must decrease, creating a higher pressure in the thorax.

To learn more, visit the link below:

brainly.com/question/24359876

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3 years ago

What does the adrenocorticotropic hormone do in the body?

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ACTH's principal function is to stimulate the cortex (outer layer) of the adrenal glands (located near the kidneys) to secrete a group of steroid hormones called glucocorticoids. Glucocorticoid hormones control the body's use of sugar and also help regulate biological functions during stressful moments

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3 years ago

What is true of a rock layer that has had another rock layer deposited on top of it

kobusy [5.1K]

Hello, Saleemsafwah12. The answer would be A - It is younger than the rock layer below. This is because the deeper you go, the older the rock is, opposed to the top layer being the youngest of them all. I hope I helped!! Have a great day.

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3 years ago

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