Sodium chloride and silver nitrate react to produce silver chloride and sodium nitrate? Which of the following will result in the fastest reaction between sodium chloride and silver nitrate?
A) Crystals of the two reactants are placed in a mortar and ground up.
B) Large crystals of the two reactants are placed in contact with one another.
C) Powdered samples of the two reactants are mixed together.
D) Solutions of the two reactants are mixed together.
D
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Explain how the natural greenhouse effect occurs.
What will be an ideal response?
Which is an example of contagious diffusion?
A) English colonists bringing their language to America B) the introduction of tulip farms in Michigan by Dutch immigrants C) the sharing of music preferences among a group of friends D) the construction of Buddhist temples in Los Angeles
Which of the following factors plays a relatively small role in the amount of solar energy received at a particular place on the Earth?
A) the angle of the sun B) the season of year C) the length of day D) distance of the Earth to the sun
The two highest levels of the atmosphere contain only small amounts of oxygen, nitrogen, and ozone. These layers are the
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