General Science: Content Knowledge 5435 Practice Questions and Answers | 100% Pass
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Module
Praxis 5435
Institution
Praxis 5435
General Science: Content Knowledge
5435 Practice Questions and Answers |
100% Pass
Which of the following guidelines should be used when collecting data during an
experiment? - Answer️️ -Vary only one factor at a time when studying how a system
responds.
Which of the following is equivale...
which of the following should also have been included in the investigation? -
Answer✔️✔️-In order to draw a valid conclusion about the effect of water on seed
germination, the student should have included a control experiment, a second dish with
a dry paper towel, in the investigation. The only experimental variable should be the
presence or absence of water. The control variables, light and temperature, should be
the same for both dishes. C.A second dish with a dry, rather than damp, paper towel
should have been used.
Which of the following will result in a solution of 0.50 M HClzero point five zero molar H
C l ? - Answer✔️✔️-A.250 mL of 2.0 M HCl added to 750 mL H2O
The concentration of the solution that results from adding 250 mL of 2.0 M HCl to 750
mL7 of water is 0.50 M. In 250 mL of 2.0 M HCl, there is
0.50 mol of HCl. The total volume after mixing is 1,000 mL or 1.0 L. The concentration
of the solution is 0.50 mol HCl per 1.0 L of solution, which is 0.50 M HCl.
The number of sunspots on the surface of the Sun increases and decreases over an 11-
year period called the solar cycle. The graph above shows how the number of sunspots
varied over 50 years. When will the next minimum and the next maximum in the number
of sunspots most likely occur? - Answer✔️✔️-C.C: data point for the 6-foot drop does not
seem to fit the pattern and the drop should be repeated
Which of the following parts of a compound microscope would be used to regulate the
amount of light transmitted through the specimen on a slide? - Answer✔️✔️-Diaphragm
Which of the following is a safe laboratory procedure? - Answer✔️✔️-Preparing a dilute
acid solution by adding a small amount of concentrated acid to water in a flask.
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