Food and ChemistryFood and Chemistry

ObjectivesObjectives

Describe chemical properties. Name 3 most important elements to life. Explain how covalent, hydrogen, and ionic bonds are

formed. Define a molecule. Identify symbols for hydroxyl, amino, ammonia, methyl,

and carboxyl. Discussion oxidation-reduction reactions. Describe the two divisions of metabolism.

Describe chemical properties. Name 3 most important elements to life. Explain how covalent, hydrogen, and ionic bonds are

formed. Define a molecule. Identify symbols for hydroxyl, amino, ammonia, methyl,

and carboxyl. Discussion oxidation-reduction reactions. Describe the two divisions of metabolism.

ElementsElements

The atom is the __________ unit of an element that still exhibits the properties of that element.

The atom is the __________ unit of an element that still exhibits the properties of that element.

Atoms consist of:Atoms consist of:

Nucleus ___________ ____________

Electrons

Nucleus ___________ ____________

Electrons

Atomic NumberAtomic Number

The atomic number of an atom is the total number of ________________.

The atomic weight of an atom is the total number of protons plus ______________.

Chemical properties of an element are determined by the number of electrons in the _____________ energy level of an atom.

The atomic number of an atom is the total number of ________________.

The atomic weight of an atom is the total number of protons plus ______________.

Chemical properties of an element are determined by the number of electrons in the _____________ energy level of an atom.

Periodic Table of the ElementsPeriodic Table of the Elements

Chemical BondsChemical Bonds

Covalent bonds

Hydrogen bonds

Ionic bonds Van der Waals bonds

Covalent bonds

Hydrogen bonds

Ionic bonds Van der Waals bonds

Ionic and Van Der WaalsIonic and Van Der Waals

Van Der Waals Van Der Waals

Bonds cont…Bonds cont…

Bonds cont…Bonds cont…

MoleculesMolecules Molecules are the ________________ identifiable unit

into which a pure substance can be divided and still retain the composition and chemical properties of that _______________.

Molecules are the ________________ identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that _______________.

Oxidation-ReductionOxidation-Reduction

Oxidation can be defined very simply as the ____________ of oxygen. Reduction can be defined as the ____________________ of oxygen

_____________________________________ Process of ____________________________ Life processes that produce or use ________________________

Oxidation can be defined very simply as the ____________ of oxygen. Reduction can be defined as the ____________________ of oxygen

_____________________________________ Process of ____________________________ Life processes that produce or use ________________________

MetabolismMetabolism

Metabolism refers to all the _____________ reactions that occur in a living system.____________________, or reactions

involving the synthesis of compounds.____________________, or reactions

involving the breakdown of compounds.

Metabolism refers to all the _____________ reactions that occur in a living system.____________________, or reactions

involving the synthesis of compounds.____________________, or reactions

involving the breakdown of compounds.

Organic ChemistryChemical Symbols of Representations

Organic ChemistryChemical Symbols of Representations

Symbol Represents

C _________________ atom

____________ Hydrogen atom

N _________________ atom

O Oxygen atom

____________ Hydroxyl (alcohol)

NH3 Ammonia

NH2 ________________________

____________ Methyl group

COOH Carboxyl (acid)

Organic Chemistry Organic Chemistry

_________________-containing molecules All carbon atoms have ___________ bonds Each carbon can connect to:

Another carbonA hydroxyAn ______________________ groupAn _____________________ (double bond)

_________________-containing molecules All carbon atoms have ___________ bonds Each carbon can connect to:

Another carbonA hydroxyAn ______________________ groupAn _____________________ (double bond)

Common Hydroxy AcidsCommon Hydroxy Acids

Reduction - OxidationReduction - Oxidation