What are metaloids?
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How would you describe the size of the following object?a bl…
How would you describe the size of the following object?a blood cell
A pylon is best described as _______, such as the massive ex…
A pylon is best described as _______, such as the massive examples seen at Karnak, Temple of Amun:
The yeast in bread dough feeds on sugar to produce carbon di…
The yeast in bread dough feeds on sugar to produce carbon dioxide. Why does the dough rise faster in a warmer area?
Imagine that you can see individual molecules. You watch a s…
Imagine that you can see individual molecules. You watch a small collection of molecules that are moving around slowly while vibrating and bumping against each other. The slower moving molecules then start to line up, but as they do so their vibrations increase. Soon all the molecules are aligned and vibrating about fixed positions. What is happening?
How many bonds between nitrogen and hydrogen are formed if y…
How many bonds between nitrogen and hydrogen are formed if you react nitrogen with hydrogen according to the following reaction? N2 + 3H2 → 2 NH3
Iconoclasm means:
Iconoclasm means:
For the following balanced equation, which has the highest c…
For the following balanced equation, which has the highest coefficient? 4 H2 + 2 C → 2 CH4
The innermost shell of an atom contains at most
The innermost shell of an atom contains at most
Which of the following is most easily understood to be quant…
Which of the following is most easily understood to be quantized?