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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 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 you react nitrogen with hydrogen according to the following reaction? N2 + 3H2 → 2 NH3

 Iconoclasm means:

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

Which of the following is most easily understood to be quantized?

When two elements come together to form a compound, which element is named first within the name of the compound?

Water and ethanol can be separated by heating the ethanol until it boils away from the water. What type of change is this?

Which of the following statements best describes a polar bond?