Inorganic compounds and solutions 1of2
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What is an inorganic compound?
- Compound that:
- Usually lacks carbon and is structurally simple
- Relatively small and cannot be used BY CELLS to preform complex biological functions
- Formed by ionic and covalent bonds
What are some examples of inorganic compounds in the human body? What % of human body are they?
- Water, many salts, acids and bases.
- Water = 55-60% of human body
- Other inorganic compounds = 1-2% of human body
What is an organic compound.
- Compound that:
- Contains carbon and usually hydrogen
- Most large and made of long chains of carbon atoms
- ALWAYS HAVE covalent bonds
What % of the body are organic compounds?
What is a solution?
A solvent with a salute dissolved in it.
What is a solvent? (in relation to water)
A substance that can dissolve ionized or polar substances.
What is a solute? (in relation to water)
A substance with ionic and/or polar covalent bonds that dissolves in a solvent.
- Hydro- water, philic- loving
- A substance that dissolves easy in water.
- Dissolves because the substance is ionic or polar.
- EX: Sugar (sucrose), Salt
- hydro- water, phobic- fearing
- A substance that does not dissolve in water.
- Consists of mainly non-polar covalent bonds.
- EX: animal fats, vegetable oils.
Why is water so important for metabolic reactions?
- Dissolves many molecules
- Allows dissolved reactants to collide and form products
- Dissolves wastes products which allows them so they can be expelled
What is hydrolysis?
- A decomposition reaction in which H2O (water) is broken down and chemically bonded with parts of a larger molecule that is also broken down.
- A decomposition reactions break down large molecules into smaller molecules by the addition of water molecules.
What is dehydration synthesis? (Polymerization, condensation)
- A synthesis reaction in which water is one of the products.
- Larger molecules are formed by having each others O's and H2's bond to form water, so they can bond to form larger molecules.
What is somethings heat capacity?
- The amount of heat energy required to change the temperature of something.
- Its ability to absorb or release heat relative to its own temperature.
Why does water have a large heat capacity? Why is its thermal properties so important for the body?
- When water is heated some of that energy goes towards breaking its hydrogen bonds which means less is used to increase the motion of water molecules.
- It helps the body maintain homeostasis by lessening the impact of environmental temperature changes.
- When water (sweat) evaporates from the skin, it takes away a large amount of heat that was in the water.
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