04 May Can some one help me
Chapter 1 Portable Electronics: The Periodic Table in the Palm of Your Hand
Working more than just the assigned problems will be helpful for learning the material.
The following questions are assigned to be answered for this course.
10 points
Both correctness and completeness will be used in the evaluation of your submission.
These questions are relate to concepts in Chapter 1, 9h edition, Chemistry in Context
1. From the solids, liquids, or gases that are present in your favorite room or office, list three homogeneous mixtures and three heterogeneous mixtures. (2pts)
2. Consider this portion of the periodic table and the groups shaded on it.
Answer these for the shaded group on the left:
a. What is the group number for this group
b. Give a general characteristic of the elements in this group
c. Name 3 elements in the group
Answer these for the shaded group on the right:
a. What is the group number for this group
b. Give a general characteristic of the elements in this group
c. Name 3 elements in the group
3. What process(es) can be done to strengthen glass?
4. How many Protons, Neutrons and electrons are there is a neutral atom of Al with a mass number of 27?
5. How many Protons, Neutrons and electrons are there is an atom of Al3+ with a mass number of 27? (this is an ion with a +3 charge)
6. How many significant figures are in each of the following:
a. 1500 m the distance of a race.
b. 0.0000000000958m, the distance between O and H atoms in a water molecule
c. 0.00000075, the diameter of a red blood cell.
7. Write each of the dimensions in question 6 in scientific notation (powers of 10 notation) See Appendix 2 if you need help.
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