Atoms & Bonding
If an atom has nine protons, what element is it?
Fluorine
Which end of the water molecule is slightly negative?
oxygen
What are the products of cellular respiration
Phosphorus is not involved in which sphere?
Atmosphere
Most phosphorus is held in
rocks
________________ involves sharing of electrons
Covalent bonding
water converts from liquid to gas
evaporation
What role do volcanoes play in the carbon cycle?
They transfer carbon from the geosphere to the atmosphere.
Plants take in nitrogen compounds from the soil through
assimilation
The property of water that makes water molecules stick to each other
cohesion
What type of bonding involves a metal bonding to nonmetals?
Ionic bonding
underground reservoirs that hold groundwater
What are the products of photosynthesis
Atmospheric nitrogen is converted to a more useful form (ammonia) through ____________
nitrogen fixing
Lightning fixation (lightning breaks up the N2 molecule, causing nitrogen to combine with oxygen)
Phosphorus has 5 valence electrons. What is the charge of a phosphorus ion?
3- (it will gain 3 electrons to acheive an octet)
Release of water vapor by plants
transpiration
nitrates are converted back to atmospheric N2 through
denitrification
Is magnesium likely to receive, give away, or share electrons?
Give away (2)
Out of all the water on earth, 3% is fresh water and 29% of that is groundwater. If the total water on earth is "x", then what amount is groundwater?
0.0087x
The process by which large amounts of algae in lakes break down and use up available oxygen, leading to fish dying is called ____________
eutrophication