atoms and molecules. everything in the world is made out of tiny particles called atoms....
TRANSCRIPT
![Page 1: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/1.jpg)
Atoms and Molecules
![Page 2: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/2.jpg)
Everything in the world is made out of tiny particles called atoms.
Understanding atoms will help us understand DNA.
![Page 3: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/3.jpg)
Periodic Table of Elements
![Page 4: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/4.jpg)
Atoms are made up of three parts.
Protons have a positive charge.
Neutrons have a neutral charge.
Electrons have a negative charge.
![Page 5: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/5.jpg)
Atom’s parts
Protons +
Neutrons |
Electrons -
![Page 6: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/6.jpg)
-
Particles that have the same charge repel one
another.
++
-
![Page 7: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/7.jpg)
Particles that have a positive charge are attracted to particles
that have a negative charge.
-+
Particles that have different charges attract
one another.
![Page 8: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/8.jpg)
Atoms & Molecules
Molecules are made of atoms that stick together
Carbon atom
Hydrogen atom
![Page 9: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/9.jpg)
Balanced ChargesMost atoms and molecules have an equal number of protons and electrons making them neutrally charged overall.
Some molecules have an uneven distribution of electrons, making them polar - they are positive at one end and negative at the other.
![Page 10: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/10.jpg)
Polymers•Polymers are very long molecules created
by units repeating in a long chain.
![Page 11: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/11.jpg)
•Some polymers are made up of all the same kind of building blocks, and others are made up of several different kinds of blocks.
![Page 12: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/12.jpg)
DNADNA is a long molecule or polymer!
It is made out of repeating units called nucleotides or base-pairs.
![Page 13: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/13.jpg)
A single human DNA molecule contains about 3 billion base pairs, which is about 10 times the population of the U.S. (300 million people) or about half the population of the entire world (6.7 billion people)
![Page 14: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/14.jpg)
Atoms, molecules, polymers, and DNA are very, very tiny.
They are so small you cannot see them even with most microscopes.
![Page 15: Atoms and Molecules. Everything in the world is made out of tiny particles called atoms. Understanding atoms will help us understand DNA](https://reader035.vdocument.in/reader035/viewer/2022081511/5697bfec1a28abf838cb86d7/html5/thumbnails/15.jpg)
Next: Bonding