There are only 115 elements in the periodic table, but a far greater variety of materials that surround us. How is this possible?
What will be an ideal response?
It is the great number of different possible combinations of elements that gives rise to the great variety of materials around us. Even the same set of elements pieced together in a different fashion gives rise to something new.
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All of the stars we see at night with our unaided eyes are within
A. 10,000 light-years, which is a small portion of our galaxy. B. 14 billion light-years, which encompasses the observable universe. C. 100,000 light-years, which encompasses most all of our galaxy. D. 5 million light-years, which encompasses our local group.
What does isotropic mean?
What will be an ideal response?
According to Graph ?, between which two temperatures does the number
of tropical cyclones in the Northern (Jun – Sep) and Southern (Dec – Mar) Hemispheres begin to increase signifi cantly? What will be an ideal response?
Ores are naturally occurring materials that can be mined profitably.
Answer the following statement true (T) or false (F)