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15 Cards in this Set
- Front
- Back
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In what abiotic chemical forms are these elements often found in nature?
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Commonly found as CO2, N2, O2 ( for air)
H2O, PO4 and S for earth |
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In what chemical form(s) do animals need to obtain these elements.
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With the exception of water and oxygen, these are found as organic compounds.
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In what chemical form(s) do plants need to obtain these elements?
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plants obtain C as CO2.
N as ammonia or nitrate Phosphorus as phosphates Sulfur as sulfides or sulfates Plant find these elements by organic compounds |
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Can a chemical element be broken done into other chemical forms by a chemical reactions?
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No, it'll always have the same amount of protons, neutrons and electrons.
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the atomic number of an element?
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the number of protons
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the mass numberof an element?
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the sum of protons and neutrons
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the weight in daltons of one atom of an element
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proton and neutrons are about 1 dalton and electrons weight is so small it counts as 0 daltons.
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what is the formula for photosynthesis?
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6 CO2 + 12 H2O =C6H12O6 + 6 H2O
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for every 1 mole of oxygen produced, how many moles of CO2 has to be consumed?
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One mole of caron dioxide.
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which is more soluble to water polar bonds or non-polar bonds?
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Polar bonds because the negativity of the element is attracted to the positive charge of the H's.
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What is the difference between a polar covalent bond and a non-polar colvalent bond?
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a non-polar bond is two elements sharing equally, unlike a polar bond which doesn't share the charges equally.
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What is a ionic bond?
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This is when two elements bond together because of an attraction of anoins and cations or poisitve and negative charged elements.
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What is a hydrogen bond?
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the is when a hydrogen atom colvalently bonds to an electronegative atom that is also attracted to another electronegative.
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what is the van der waals interaction?
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this is when atoms and molecules are so close that it makes it always have a positive or negative charge.
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what's the difference between hydrophobic and hydrophilic?
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hydrophilic mixes in water and hydrophobic doesn't.
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