This portion of your semester 1 final will require a CER (claim, evidence, and reasoning)
pape...
Chemistry, 14.12.2020 08:20 microwave13016
This portion of your semester 1 final will require a CER (claim, evidence, and reasoning)
paper. Use the following to organize your thoughts and prepare a paper which you can
use on the day of the exam.
Question 2: During the late 19th and early 20th century, Marie Curie and her husband
discovered polonium and radium. Once they started exploring the properties of these
metals, they coined the term "radioactivity".
Through their discoveries, scientists gained more information about atoms and
elements.
Think about what you know about the physical and chemical properties of elements
In CER(claim, evidence, reasoning) format:
1. Tell a story of how you discovered a newl fictitious element.
2. Describe any unique physical and chemical properties of the element
3. Give it a name.
4. Explain where this element would be located on the periodic table.
Answers: 3
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Consider the point on the plot where 10.0 g of naoh have been added. what amount of naoh, in moles, has been added? 0.308 mol fecl3 initially present
Answers: 1
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Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?
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Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.
Answers: 3
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Consider this equilibrium: n29) + o2(g) + 2no(c).nitrogen gas and oxygen gas react when placed in a closed container. as the reaction proceeds towards equilibrium, what happens to the rate of thereverse reaction?
Answers: 1
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