combustion, corrosion, photosynthesis, respiration
xylem cells
- part of the plants transport system - supplies water to the leaf
spongy mesophyll cells
-loosely packed -air spaces in between make this layer sponge like
palisade mesophyll cells
-most photosynthesis happens here -many chloroplasts are very green
lower epidermis
-one cell thick
upper epidermis
-one cell thick -clear, allowing light to reach the palisade cells
stoma (stomata in plural)
-opening on underside of the leaf -allows CO2 and O2 to enter and exit
phloem cells
-part of the plants transport system -carry glucose and other chemicals away from the leaf
cuticle
-waxy waterproof coating - reduces water loss - protects leaf from fungi and bacteria
O2
2 of oxygen
Reactants
Are the substances you started with before the chemical process
corrosion is...
a chemical reaction that occurs when metals are exposed to water or air or other chemicals
endothermic
absorbs energy
oxygen is supplied through the lungs so
aerobic respiration can be carried out
aluminium is very reactive, reacting almost immediately with air forming aluminium oxide
aluminium + oxygen gas -> aluminium oxide
hydrocarbons
are compounds of hydrogen and carbon
products
are the substances formed by the chemical reaction
CO2
carbon dioxide
the reactants in photosynthesis are
carbon dioxide + water
the chemical equation for photosynthesis is...
carbon dioxide + water -> (sunlight, chlorophyl) glucose + oxygen gas
the lungs also allow the waste products of respiration __________ to exit the body
carbon dioxide and water vapour
chloroplasts contain
chlorophyl
photosynthesis takes place in
chloroplasts
what type of combustion reactions is this methane gas + oxygen gas -> carbon dioxide +water vapour
complete
if plants absorb energy from sunlight to allow photosynthesis to occur, what type of reaction is it?
endothermic reaction
C6H12O6
glucose
the products of photosynthesis are
glucose + oxygen gas
the chemical equation for respiration is...
glucose + oxygen gas -> carbon dioxide + water +energy
what type of combustion is this methane + oxygen gas -> carbon monoxide + water vapour
incomplete
hydrocarbon examples
methane gas + oxygen gas -> carbon dioxide plus water vapour
respiration happens in the parts of the cell called the
mitochondria
an acid + a base =
neutralisation
complete combustion
occurs in an unlimited supply of oxygen and the products are carbon dioxide and water
incomplete combustion
occurs in limited supply of oxygen and produce carbon (smoke, soot, charcoal) or carbon monoxide and water
combustion
occurs whenever something reacts with oxygen gas whilst burning or exploding
guard cells
open and close the stoma
sunlight
passes through the cuticle and upper epidermis into the palisade cells where the chloroplasts are
plants make their own food in a process called
photosynthesis
exothermic
releases energy
acid+metal->
salt+hydrogen gas
acid + base->
salt+water
acid + hydrogen carbonate->
salt+water+carbon dioxide
acid+carbonate->
salt+water+carbon dioxide
pure silver reacts with sulfur to form a black coating called tarnish
silver + hydrogen sulfide -> silver sulfide + hydrogen gas
chloroplasts are...
specialised organelles/structures found in cells in the green parts of plants
excess glucose is stored as ______ by the plant
strach
law of conservation mass
the total mass of the reactants is equal to the total mass of the products
chlorophyl ...
traps light energy from the sun and converts it into chemical energy (glucose)
