Chapter 2.ppt - The average person falls.asleep in seven...

This preview shows page 1 - 8 out of 28 pages.

The average person falls .. asleep in seven minutes
Image of page 1

Subscribe to view the full document.

AP Chemistry Abigail Giordano 2 Chapter 2 Atoms, Molecules and Ions
Image of page 2
AP Chemistry Abigail Giordano 3 Law of Conservation of Mass Law of Conservation of Mass Discovered by Antoine Lavoisier * the father of modern chemistry Mass is neither created nor destroyed Combustion involves oxygen
Image of page 3

Subscribe to view the full document.

AP Chemistry Abigail Giordano 4 Other Fundamental Chemical Laws Other Fundamental Chemical Laws A given compound always contains exactly the same proportion of elements by mass. Carbon tetrachloride is always 1 atom carbon per 4 atoms chlorine. Law of Definite Proportion
Image of page 4
AP Chemistry Abigail Giordano 5 Other Fundamental Chemical Laws Other Fundamental Chemical Laws When two elements form a series of compounds , the ratios of the masses of the second element that combine with 1 gram of the first element can always be reduced to small whole numbers. Examples: H 2 O and H 2 O 2 NO and N 2 O Law of Multiple Proportions
Image of page 5

Subscribe to view the full document.

AP Chemistry Abigail Giordano 6 Dalton’s Atomic Theory (1808) Dalton’s Atomic Theory (1808) 1. Each element is made up of tiny particles called atoms. 2. Atoms of each element are identical. Atoms of different elements are different. 3. Compounds are formed when atoms combine. Each compound has a specific number and kinds of atom. 4. Chemical reactions are rearrangement of atoms. Atoms are not created or destroyed.
Image of page 6
AP Chemistry Abigail Giordano 7 Avogadro’s Hypothesis (1811) Avogadro’s Hypothesis (1811) 5 liters of hydrogen 5 liters of chlorine Same number of particles!
Image of page 7

Subscribe to view the full document.

Image of page 8

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern