As pure water approaches its freezing point, the density decreases. Why does this happen?
A) The water compresses into ice.
B) The hydrogen bonds become rigid, allowing it to expand slightly.
C) The hydrogen bonds break as the molecules compress.
D) Ice takes up a smaller surface area than liquid water.
B
You might also like to view...
One reason for worsening terms of trade is that less developed countries are often dependent on one primary commodity for export
Indicate whether the statement is true or false
There is ________ the concept of global warming
A) Very strong evidence to support B) Some strong evidence to support C) Evidence both supporting and against D) Evidence against
Factors contributing to desertification in the Sahel include all of the following except
A) deforestation and overgrazing. B) population increases. C) southward expansion of desert conditions following persistent drought. D) lack of a regional environmental policy. E) northward shift of the ITCZ.
By 2020 what will the regulatory standard for gasoline mileage of automobiles in the United States be?
A) 27.5 miles per gallon B) 30.5 miles per gallon C) 35 miles per gallon D) 33 miles per gallon E) 22 miles per gallon