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Chemistry, 10.06.2021 23:40, loveyeti106838
1. Two hypothetical elements in the periodic table have different characteristics as shown in the following table.
ELEMENT, ELECTRONEGATIVITY, TYPE OF ION, ELECTRICAL CONDUCTIVITY, BRIGHTNESS
X Low Electro cation ion high conduc brightness yes
Y High Electro anion ion none conduc brightness no
According to the data in the table, answer the following questions.
a. If you were to carry out an experiment with these 2 hypothetical elements, write a hypothesis to differentiate them and write another hypothesis about how they would react with oxygen and water.
HYPOTHESIS 1:
HYPOTHESIS 2:
In four steps, design an experiment (write step 1, step 2, step 3 and step 4) to check and verify what types of links would form these elements X and Y if after a series of reactions these elements join in some type chemical bonding.
STEP 1
STEP 2
STEP 3
STEP 4
b. A series of reactions of elements X and Y are given below, complete these reactions bearing in mind that X has an oxidation number +2 and Y has an oxidation number +6.
I. X + O2 XO
II. Y + O2 YO3.
III. XO + H2O X(OH)2
IV. YO3 + H20 H2YO4.
V. X(OH)2 + H2YO4 A + H2O.
d. Considering the result (A) in reaction number 5,
I. What type of chemical bond do you think A has?
II. What are its physical and chemical properties?
III. Design a four-step experiment so that you can identify the type of chemical bond that substance A obtained in reaction 5 has. The design must contain at least 2 variables to be measured and 2 hypotheses with these variables.
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Answers: 1
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