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37 Cards in this Set

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  • Back
Proton
positive charged atom
neutron
neutral charged atom
electron
negative charged atom
ion
an atom of group of atoms with an electrical charge due to loss or gain of electrons
element
a pure substance made up of only 1 type of atom
c
carbon
h
hydrogen
o
oxygen
n
nitrogen
s
sulphur
p
phosphorus
neutron=
mass number + atomic number
mass number=
proton + neutron
isotope
varieties of an element that differ only in the number of neutrons in their atomic nuclei
molecule
an uncharged group of atoms held together by covalent bonds
compound
substance made up of 2 or more different elements bonded together
isomer
compounds with same molecular formula but a different arrangement of atoms
ionic bond
transfer of electrons between atoms occur to form charged ions
covalent bond
when there is a sharing of electrons between atoms to form molecules
inorganic compounds
compounds that dont have carbon atoms
principle inorganic compounds in living organisms
water and salt
acid
solution with excess H+ ions- vinegar, acetric acid
bases
solutions with excess OH- ions- soaps, bleach
Ph of 7
neutral
under 7 on PH
acid
over 7 on ph
base
ph paper turns blue if:
base
a ph paper turns red if:
acid
autotrophic
manufacturing organic food from inorganic materials
autotrophs
make their own food
chemosynthesis
energy from chemicals
photosynthesis
energy from light
importance of photosynthesis
food and oxygen
pigment
colored compounds that absorb cetrain wavelengths of light and reflect others
clorophyll
most important photosynthetic pigment
cellular respiration
reaction where potentional energy in organic molecules (glucose) is converted to energy (ATP)
aerobic respiration
energy transfer with oxygen