regents biology ch. 6the chemical basis of life atoms, elements, & molecules why are we studying...
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![Page 1: Regents Biology Ch. 6The Chemical Basis of Life Atoms, Elements, & Molecules Why are we studying Chemistry?](https://reader035.vdocuments.us/reader035/viewer/2022081519/56649e905503460f94b95372/html5/thumbnails/1.jpg)
Regents Biology
Ch. 6The Chemical Basis of Life
Atoms, Elements, &Molecules
Why are westudying
Chemistry?
![Page 2: Regents Biology Ch. 6The Chemical Basis of Life Atoms, Elements, & Molecules Why are we studying Chemistry?](https://reader035.vdocuments.us/reader035/viewer/2022081519/56649e905503460f94b95372/html5/thumbnails/2.jpg)
Regents BiologyProton Neutron Electron
Hydrogen1 proton1 electron
Oxygen8 protons8 neutrons8 electrons
Everything is made of matter Matter is made of “ATOMS”
Atoms are the smallest unit
of matter
![Page 3: Regents Biology Ch. 6The Chemical Basis of Life Atoms, Elements, & Molecules Why are we studying Chemistry?](https://reader035.vdocuments.us/reader035/viewer/2022081519/56649e905503460f94b95372/html5/thumbnails/3.jpg)
Regents Biology
Section 2.1 Atoms, Elements, and Molecules
Atomic Number – the number of protons located in the nucleus of an atom.
Atomic Mass – the number of protons and neutrons together. (also called the “Mass Number”)
![Page 4: Regents Biology Ch. 6The Chemical Basis of Life Atoms, Elements, & Molecules Why are we studying Chemistry?](https://reader035.vdocuments.us/reader035/viewer/2022081519/56649e905503460f94b95372/html5/thumbnails/4.jpg)
Regents Biology
About 25 elements are essential for life Four elements make up 96% of living matter:
• carbon (C)
• hydrogen (H)
• oxygen (O)
• nitrogen (N)
Section 2.1 Atoms, Elements, and Molecules
![Page 5: Regents Biology Ch. 6The Chemical Basis of Life Atoms, Elements, & Molecules Why are we studying Chemistry?](https://reader035.vdocuments.us/reader035/viewer/2022081519/56649e905503460f94b95372/html5/thumbnails/5.jpg)
Regents Biology
The World of Elements
C
Different kinds of atoms = elementsDifferent kinds of atoms = elements
H
ON
P SNa
K
Mg
Ca
![Page 6: Regents Biology Ch. 6The Chemical Basis of Life Atoms, Elements, & Molecules Why are we studying Chemistry?](https://reader035.vdocuments.us/reader035/viewer/2022081519/56649e905503460f94b95372/html5/thumbnails/6.jpg)
Regents Biology
Molecules of Life Put C, H, O, N together in different ways to
build living organisms What are organisms made of?
carbohydrates sugars & starches
proteins fats (lipids) nucleic acids
DNA, RNA
![Page 7: Regents Biology Ch. 6The Chemical Basis of Life Atoms, Elements, & Molecules Why are we studying Chemistry?](https://reader035.vdocuments.us/reader035/viewer/2022081519/56649e905503460f94b95372/html5/thumbnails/7.jpg)
Regents Biology
Elements come together to make compounds
Compound – A substance containing 2 or more elements.
Example Table Salt (aka – NaCl)
Elements Compounds
Section 2.1 Atoms, Ions, and Molecules
![Page 8: Regents Biology Ch. 6The Chemical Basis of Life Atoms, Elements, & Molecules Why are we studying Chemistry?](https://reader035.vdocuments.us/reader035/viewer/2022081519/56649e905503460f94b95372/html5/thumbnails/8.jpg)
Regents Biology
Questions????