SCI304A: Honors Chemistry | Unit 1 | Lesson 11: Mid-Unit Test
Name: Jane Lowery
Mid-Unit Test, Part 2
Answer the questions below. When you are finished, submit this assignment to your teacher by the due date for
The elements in group 1A all have only one valence electron located in an s subshell. The
number of the period indicates the number of the valence subshell, so francium must be in group
1A, period 7.
The elements in group 2A all have two valence electro
Most metals are solid at room temperature and can easily be pounded into sheets, stretched
into wires, or bent into other shapes. These properties make them ideal for use in jewelry.
Of the elements on the list, only gallium lies to the left of the line
The first electron shell of an atom can hold up to two electrons, and the second electron
shell can hold up to eight electrons. A carbon atom has six electrons. Two of them will fill
the first, innermost electron shell. The remaining four will partly fi
Only nonmetals are gases at room temperature, and most nonmetals form negatively charged
ions when they react with other elements. Therefore, fluorine and chlorine are nonmetals.
Iodine, helium, and hydrogen are the only nonmetals in the list.
3. A graph of the data made in another program is shown below.
4. Although a graph shows the same data that are displayed in a data table, it shows them in a
more visual way. That is, a graph shows the data as an image, rather than as numbers. Most
Questions A, B, and C all require opinions to answer. Question D can be
answered using only observations, so it is a question that can be
answered with a scientific investigation.
One possible investigation is described below:
Obtain three sheets of
5. Use conversion factors to convert Calories to calories, and calories to joules.
1,000 cal 4.186 J325 Cal = 1.36 106 J
1 Cal 1 cal
6. Use a conversion factor to solve this problem. Remember to use the correct number
of significant figures.
1 cal425.3 J
3. Carbon's atomic number is 6, so it has six electrons. The diagram below shows how
those electrons will fill the subshells:
4. Aluminum has atomic number 13, so a neutral aluminum atom must have 13 electrons.
Therefore, the electron configuration of a
2According to the electromagnetic spectrum shown in Example 2, gamma rays have more
energy than X rays do. Therefore, atom A emits lower-energy radiation than atom B does. Atom
A's emission therefore corresponds to a transition between energy levels that