Hello again!
Pendulums are common devices that scientists use to demonstrate concepts of motion, but they aren’t limited to the confines of a science classroom. In fact, pendulums are all around us. They are used to keep time (clocks) or to have fun on a playground (swings). Some pendulums, such as the one in the photograph, are used to demonstrate the Earth’s rotatation. In this lab activity, you will create a pendulum and manipulate its components to test factors that control the motion of its swing.
Answer:
On Monday the class started at 8:15.
Explanation:
The statement that Phenolphthalein is not
affected by PH is False
Phenolphthalein is a colorless
chemical compound, when added to alkaline
solutions it will turns pink, which means it
has been affected by the PH.
Phenolphthalein will remain colorless
if in acidic solution, that's less than PH of 7.
But at pH level of 8.2 it turns pink then at pH
10 it turns magenta.
Therefore, PH do affect Phenolphthalein
indicator
Answer: It is possible to make a valid conclusion as long as the data does not pertain to one certain region.
Hope this helps! :)
Explanation:
