THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would...
-
Upload
reynard-nash -
Category
Documents
-
view
212 -
download
0
Transcript of THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would...
![Page 1: THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would you explain the relationship between atoms, elements,](https://reader038.fdocuments.in/reader038/viewer/2022110321/56649ce25503460f949ae193/html5/thumbnails/1.jpg)
THE CHEMISTRYOF
LIFE
Honors BiologyChapter 2
![Page 2: THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would you explain the relationship between atoms, elements,](https://reader038.fdocuments.in/reader038/viewer/2022110321/56649ce25503460f949ae193/html5/thumbnails/2.jpg)
The Nature of Matter
Essential Question:How would you explain the relationship between atoms, elements, and compounds?
![Page 3: THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would you explain the relationship between atoms, elements,](https://reader038.fdocuments.in/reader038/viewer/2022110321/56649ce25503460f949ae193/html5/thumbnails/3.jpg)
Atoms
smallest unit of matter
each element has its own unique # of protons
(atomic #)
![Page 4: THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would you explain the relationship between atoms, elements,](https://reader038.fdocuments.in/reader038/viewer/2022110321/56649ce25503460f949ae193/html5/thumbnails/4.jpg)
Elements
Only ~ 24 elements found in living things
4 most abundant:1. Oxygen2. Carbon3. Hydrogen4. Nitrogen
![Page 5: THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would you explain the relationship between atoms, elements,](https://reader038.fdocuments.in/reader038/viewer/2022110321/56649ce25503460f949ae193/html5/thumbnails/5.jpg)
Isotopes
atoms of same element with different # of neutrons
#p + #n = atomic mass
(mass #)
![Page 6: THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would you explain the relationship between atoms, elements,](https://reader038.fdocuments.in/reader038/viewer/2022110321/56649ce25503460f949ae193/html5/thumbnails/6.jpg)
Radioactive Isotopes
some isotopes have unstable nuclei so they undergo “decay”
![Page 7: THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would you explain the relationship between atoms, elements,](https://reader038.fdocuments.in/reader038/viewer/2022110321/56649ce25503460f949ae193/html5/thumbnails/7.jpg)
Chemical Cpds
compound: substance formed by chemical combination of 2 or more elements in definite proportions
cpd has different properties than elements alone had
![Page 8: THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would you explain the relationship between atoms, elements,](https://reader038.fdocuments.in/reader038/viewer/2022110321/56649ce25503460f949ae193/html5/thumbnails/8.jpg)
Chemical Formulas
![Page 9: THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would you explain the relationship between atoms, elements,](https://reader038.fdocuments.in/reader038/viewer/2022110321/56649ce25503460f949ae193/html5/thumbnails/9.jpg)
Chemical Bonds
Atoms form chemical bonds with other atoms to ________________.
The 2 main types of bonds are ________ and ____________.
![Page 11: THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would you explain the relationship between atoms, elements,](https://reader038.fdocuments.in/reader038/viewer/2022110321/56649ce25503460f949ae193/html5/thumbnails/11.jpg)
Covalent Bonds Polar Covalent Bonds
share valence e-
unequal sharing e-
Chemical Bonds
![Page 12: THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would you explain the relationship between atoms, elements,](https://reader038.fdocuments.in/reader038/viewer/2022110321/56649ce25503460f949ae193/html5/thumbnails/12.jpg)
Ionic bonds
transfer of e- atom with a charge (ion)
(+) ions = cations(-) ions = anionsopposite charges attract
charges must be balancedstronger bonds than covalent
![Page 13: THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would you explain the relationship between atoms, elements,](https://reader038.fdocuments.in/reader038/viewer/2022110321/56649ce25503460f949ae193/html5/thumbnails/13.jpg)
van der Waals Forces
Because atoms do not share e- equally, there are polar bonds
This causes the (+) end of one molecule to be attracted to the (-) end of another molecule
This attraction is called van der waals forces Very weak compared to covalent bonds but are
still able to hold molecules together
![Page 14: THE CHEMISTRY OF LIFE Honors Biology Chapter 2. The Nature of Matter Essential Question: How would you explain the relationship between atoms, elements,](https://reader038.fdocuments.in/reader038/viewer/2022110321/56649ce25503460f949ae193/html5/thumbnails/14.jpg)
Van der Waals Forces in action