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Rashid [163]
3 years ago
15

Tell me WHAT you hope to learn in this class / HALF page Chemistry

Chemistry
1 answer:
Mrac [35]3 years ago
6 0

Answer:

My experience in/with scienceI begin with what I believe science means to me. Science is the natural world around me&emdash;trees, animals, earth, air, people, flowers, birds, machinery, working tools. As a nurse science also means the body and how it is made and functions. How illness occurs and how we heal, how the mind thinks.

My experience with science began as a child. My father and mother both had scientific interests&emdash;gardening, astronomy, archery, fishing, outdoors, farming. I was a girl guide so camping, fires etc. were interesting to me.

Nursing started out as science&emdash;physiology and medications, surgery and healing. I grew older and began to realize that all these things I saw as science were actually connected to people and people were all unique and wonderful. The rules of science don't fit with people&emdash;because each person has a different relationship with the rules of science and often-mysterious things happen.

Health that started out as an experimental hard scientific definition has now become a word with meaning&emdash;different for each person. In my practice health is a central focus and I am wanting to learn how to facilitate health for the people that I come into contact with. I have learned that what I do to people to facilitate their health and wellness contributes minimally towards their capacity of health&emdash;but what I do with people has more potential to support their being healthy or their perceiving health.

I see science now from this broader perspective and look forward to working and learning in my personal and professional life in this manner. Science defined in this way opens many more doors to understanding people and the world that we live in. I think that this meaning of science also assists me to grow as a person in my view of the world I live in.

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Explanation:

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Which of the following is a correct formula unit of an ionic compound?
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Answer : The correct formula unit of an ionic compound is Ca(OH)2

Explanation :

An ionic compound is formed when a metal atom donates one or more electrons to a non metal atom.

During this process, metal gains a positive charge and a nonmetal gets a negative charge.

In an ionic compound, these charges on the ions are balanced so that the overall compound is neutral.

Let us check which of the given compounds have a neutral charge.

1) Al2F3 : Charge on Al is +3 and that on F is -1.

The total charge on 2 Al is 2x3 = +6.

The total charge on 3 F atoms is 3x(-1) = -3

The overall charge on the compound is +6-3 = +3.

That means the given formula unit is not correct.

2) Ca2O : Charge on Ca is +2 and that on O is -2

Total charge on Ca is 2x2 = +4

The overall charge is +4-2 = +2

Therefore the given formula unit is not correct.

3) Ca(OH)2 : The charge on Ca ion is +2 and that on OH is -1.

The total charge on 2 OH ions is 2x(-1) = -2

The overall charge is +2-2 = 0

This gives a neutral compound.

Therefore the given formula unit is correct.


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