## an atom with an electric charge

Atoms are considered to be electrically neutral (no overall electric charge) unless stated otherwise. If you have an ion (an atom with an electric charge), what subatomic particle has to vary? Breifly explain why.

## filling out and uploading a lab report.

Experiment 1 Instructions Note: You will be filling out and uploading a lab report. Please see this experiments Report template. 1. Download and print out the Report_template for Experiment 3 Density of solid matter. 2. Access link to the youtube video for the experiment: https://www.youtube.com/watch?v=CzcdByf9ZC0 (Links to an external site.) 3. Use Data Table in the template to record volume and mass for each object. 4. Calculate Density for the object in Data Table. 5. Show all calculations below the table for each part. 6. Quality of results: 1) Lookup/Google some of the density values for some of those objects as best as you can 2) How do those standard values compare to yours from the simulator? What did you learn from the experiment? Any changes?

## Synthesis of Aspirin

Synthesis of Aspirin Instructions 1) The experiment is just the 1 link Synthesis of Aspirin. In the link, the UK Professor has a bit of an accent, so I suggest turning on closed captioning. 2) You will follow along with his lecture about the experiment. Since the experiment isn’t all written out, I provided for additional background information, a pdf of the face-to-face version we have performed at BRCC. The reaction is the same, it is just the numbers are different of course. 3) As you follow the UK professor through the experiment make notes of what he is doing and weighing in the procedure section of the report template. And record his numbers as he records them in his report document. 4) then you will follow along with his calculations and reproduce them in the data analysis section of your template. 5) For your conclusion, discuss problems with the experiment and why, percent yield.

## carbon emissions

Greenhouse Effect & Carbon Cycle & Equilibrium (from CRA 2)
– explain the greenhouse effect
– explain the carbon equilibrium/cycle
o explain what a carbon source is
o explain the natural ways carbon is released by the Earth
o explain the human ways carbon is released by the Earth
o explain what a carbon sink is

o explain the natural ways carbon is up-taken by the Earth
o explain how the equilibrium is out of balance
(7 points) Paragraph 3 (this should be more than 1 paragraph): Effect of Carbon Dioxide Levels on Earth &
CA & Ocean Acidification (from CRA 4 & 5)
– explain what climate change is and what at least 3 evidences (or trends seen over the course of
____ years) that climate change is happening
– explain what the current trend in temperature that increasing CO2
– explain 1 method scientists use to find CO2
levels correlates with
levels (hint: NASA ice core samples)

– explain at least 4 effects of climate change on the world
– explain at least 2 direct effects of climate change on California
– explain ocean acidification
o the change in pH and general chemical equation
o explain the effects of ocean acidification on particular species or ecosystems
(5) points) Paragraph 4: Solutions (from CRA 6)
– give a general list of solutions presented
– explain 1 method humans can use to help reduce CO2
climate change etc.

levels, greenhouse gas emissions, adapt to
– explain the benefits of this solution (both long and short term)
– explain the challenges of this solutions (both long and short term)
– explain how could you reduce your carbon footprint. (you may use personal pronouns here)
o List at least 2 ways
o Are you willing to make these changes? Why or why not?

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## CHEMISTRY in HEALTH-CARE

You are required to write an essay on the topic “CHEMISTRY in HEALTH-CARE, CLIMATE CHANGE, and ENVIRONMENT PROTECTION”. The format of the essay is the following: at least six pages written in Times New Romans or Arial fonts with character size 12 and single-spaced. You are encouraged to add relevant Figures in your Essay Write-up and add the References used.

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## The effect of different type of water on plant growth

I need an introduction for ( The effect of different type of water on plant growth)

The first source is water from the Elk river
The second source is drinking water
The third source is utility water
The fourth source is distilled water

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## Do you know the reason ice floats in your drink?

Do you know the reason ice floats in your drink? It is because the density of ice is lower than that of water. Chemistry is happening all around you at all times (both physical and chemical changes). What have you observed within the last week that involves chemistry? What is that process/reaction?

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## What is the hybridization of the central atom in each of the following?

What is the hybridization of the central atom in each of the following?

You need to:
*show your work with the solution (use an embedded image or the fx button on the Rich Text Editor), and explain in text form how you approached and worked through the problem.
*explain in the text how you approached and worked through the problem

Chapter 8 Question 12
What is the hybridization of the central atom in each of the following?
(a) BeH2
(b) SF6
(c) PO4
3−
(d) PCl5

Chapter 8 Question 46
True or false: Boron contains 2s
22p
1 valence electrons, so only one p orbital is needed to form molecular
orbitals.

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