Conservation of Matter

It cannot be created nor destroyed

Sandwich Making

• 1 patty of meat• Ketchup• 1 slice o’ Cheese• 2 bread buns

• When you put these together, what do you get?

• Would you be more full if you ate these things together instead of apart?

Baking

• ½ stick of butter• 1.5 cups of flour• ½ cup of milk• 1 cup of sugar• 2 eggs

• If we were to combine these items and cook them, would they change?• Chemically?• Weight?

Burger and Cake

• Whether the ingredients are eaten combined or eaten separately, the same amount of food is eaten.

• This is similar to the conservation of matter–Matter can neither be created nor

destroyed.• This is true with things that are combined or

with things that actually change the way they look.

Impossible.

• You can’t destroy matter. Period• If you blow up a TV, there is exactly the same

amount of matter before the explosion than after.

• You disconnected different atoms and destroyed your ability to watch SpongeBob but you didn’t destroy the matter.

Water Cycle

• Is water destroyed in the water cycle?–NO!

• Water is rearranged as it evaporates, condenses, precipitates, flows, freezes, etc.

• All along the way, the atoms that make-up water are all the same. They may partner up with different atoms but they are NEVER destroyed.

Nitrogen Cycle

• Humans (and others) require Nitrogen to live.• The air is FULL of nitrogen.• Humans can’t use the nitrogen in the air– Where do we get N from?

NITROGEN Cycle

Carbon Cycle

• Humans require _____ to breathe.• Humans give off _____ as a waste product.• Plants require _____ to breathe.• Plants give off _____ as a waste product.

Oxygen Carbon Dioxide

Carbon Cycle

• Humans give off CO2 and _____ “breathe” it in.• Where does it go when the plant dies?– Into the consumer–Rots on the ground

• When the producer or consumer dies, the CO2 goes back into the atmosphere.

• If the organism doesn’t have time to rot, they can build up and eventually turn into petroleum (oil).

• If we burn fossil fuels, we add CO2 to the air faster than it can

Carbon Cycle

• Humans give off CO2 and _____ “breathe” it in.• Where does it go when something eats a plant?– Into the animal

Human Effect

• Nitrogen Cycle – too much nitrogen– Algal blooms, widespread aquatic death

• Carbon Cycle – too much CO2– Green House effect

• Nitrogen Pollution - http://www.youtube.com/watch?v=vCicSNnKUvM

• Carbon Cycle EPA - http://www.youtube.com/watch?feature=player_embedded&v=vrDekmRbBVk