Hamilton MS Science Gr 7 Digestive System
the element that is the chemical basis for all life on earth
|Inorganic compound|| |
compound that does not contain carbon
|organic compound|| |
A compound that contains carbon
begins to break down food into smaller pieces through mechanical digestion. saliva in the mouth begins chemical digestion
where food is digested mechanically by peristalsis and chemically by digestive solutions with the help of enzymes.
|mechanical digestion|| |
the physical breakdown of food into smaller pieces
special structures in the mouth that physically break down food by chewing and grinding
once nutrients are absorbed into the bloodstream, they are carried to all the cells of your body.
when a substance is turned into a simpler or different substance during digestion, a chemical change has occurred.
|chemical energy|| |
The energy found in food
|mechanical energy|| |
During digestion, the chemical energy in food is transformed mechanical energy to allow the body to move, and then into thermal energy as heat is given off
|Chemical to mechanical to thermal|| |
the order of energy transformations in digestion
|small intestine|| |
responsible for most chemical digestion and absorption of nutrients
|large intestine|| |
where water is removed before eliminating waste
enzymes, juices and acids in your stomach all contribute to chemical digestion
a type of physical (mechanical) digestion in which food is squeezed through your digestive tract;like from your esophagus into your stomach
|Thermal energy|| |
Your stomach releases heat during digestion. This is an example of a chemical change.
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