bio ch 2

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increases

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increases

as CO2 increases, temperature __________

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greenhouse effect

CO2 in the atmosphere is necessary because it helps create the g____________ e_______ which makes earth habitable

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okay

look at your question of the day from week 11 monday (draw an atom that's not an isotope) because it is a quiz question!

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cafe naps

what acronym can you use to remember the trace elements?

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sulfur

which trace element is part of SOME amino acids (which make up proteins) and allows bonds to form within the amino acids, which influence the protein's shape

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sodium

which trace element is found in SOME amino acids AND is necessary for nerve impulses

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iron

which trace element is the oxygen binding component of blood?

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calcium

which trace element is a component of bones and teeth, as well as is important for synaptic transmission?

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phosphorus

which trace element is a component of ATP, DNA, RNA, and the plasma membrane

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matter

anything that takes up space and has mass

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element

a substance that CANNOT be broken down to other substances by chemical reactions

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synaptic transmission

calcium also helps with _________ __________, which gets the 'message' from one neuron to the next

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compound

what is a substance consisting of two or more DIFFERENT elements combined into a fixed ratio

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molecule

O2 (imagine the 2 is small and on the bottom) is an example of this, multiple of the same element

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CHON

what acronym can you use to remember essential elements?

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carbon hydrogen oxygen nitrogen

name the essential elements in order of CHON

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essential

__________ elements are elements that are essential to life and found in the basic structure of all biochemical molecules

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trace

______ elements are elements required by an organism in only minute (small) qualities

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96

CHON makes up __% of living matter

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atom

the smallest unit of matter that still retains the properties of an element

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proton

positively charged

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neutron

neutral charge

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electron

negative charge

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atomic

________ number is the number of protons in an element

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mass

______ number is the sum of the protons and neutrons in the nucelus of an atom

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neither

which has more electrons... carbon 12 or carbon 14

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isotopes

different atomic forms of a given element - the different amount of neutrons affect the element's mass, therefore creating this

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8

the second energy level can hold _ electrons

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2

the first energy level can hold _ electrons

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electrons

high energy sub atomic particles are...

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right

the intert elements are on the _____ of the periodic table

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shell

valence ______ is the outermost electron shell

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electrons

valence _______ are the outer electrons in the valence shell

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valency

the measure of a given element's bonding capacity with other atoms when it forms compounds/molecules (there are many ways to say this, the answer is the one ending in y for this)

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periods

in the periodic table, the rows are called ______

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groups

in the periodic table, the columns are called _______

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inert

what's another word for nonreactive? fargo will not tell you what it means on the tests/quizzes!

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chemical bonds

________ ______: these are formed when valence electrons from different atoms interact with each other forming molecules

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electronegativity

the attraction of a particular kind of atom for the electrons of a covalent bond

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electronegativity

more electrons = more ______________

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covalent ionic strong

c______ and i______ bonds are examples of s______ chemical bonds

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covalent

_______ bond: a bond consisting of pairs of shared electrons, polar or nonpolar. this is elements from the same side of the table (i think?)

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polar

______ covalent bond is a covalent bond in which the electrons are NOT shared equally

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polar

H2O is an example of a ______ covalent bond

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nonpolar

O2 is an example of a __________ covalent bond

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double

__________ covalent bond is a bond in which 2 pairs (OR 4 electrons) are shared

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nonpolar

_________ covalent bond: a covalent bond in which the electrons are shared equally

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anion

ion with a negative charge

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cation

ion with a positive charge

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okay

remember cations because cats have paws and are pawsitive!

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okay

remember anion because it sounds like onion and that makes you cry which is bad so it's negative

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ionic

_______ bond: the attraction between cations and anions

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92

there are how many elements in nature (according to the textbook)

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electrons

the number of protons and _________ are NOT equal in IONS

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neutrons

the number of protons and ________ are NOT equal in ISOTOPES

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