1 / 7

Chapter 6:

Chapter 6:. Section 1:.

demetrius-manning
Download Presentation

Chapter 6:

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 6:

  2. Section 1: Democritus theory was that matter is composed of atoms. Dalton based his theory on experiments of how elements combine with other elements. Thompson discovered that electrons are in atoms, but he didn’t know where they were exactly located. Rutherford found that atoms are mostly filled with empty space with a dense positive nucleus. Bohr thought that electrons are located in levels at certain distances from the nucleus. The current atomic theory is represented by the electron cloud model.

  3. Section 1 Vocabulary: Atom: the smallest unit of an element that maintains the properties of that element. Nucleus: in physical science, an atom’s central region, which is made up of protons and neutrons. Electron Clouds: region around the nucleus of an atom where electrons are likely to be found.

  4. Section 2: Atoms consist of a nucleus which has protons, neutrons, and electrons which are located in the electron cloud around the nucleus. The number of protons in the nucleus of an atom is the atom’s atomic number. Different isotopes of an element have different numbers of neutrons in their nucleus. Isotopes of an element share most chemical and physical properties. The mass of an atom is the sum of the atom’s protons and neutrons. Atomic mass is a weighed average of the mass of all natural isotopes. Lastly, the forces at work in an atom are a gravitational force, electromagnet force, strong force, and a weak force.

  5. Section 2 Vocabulary: Proton: subatomic particle that has a positive charge and that is located in the nucleus of an atom and the number of protons in the nucleus is the atomic number, to determine the identity of the element. Atomic Mass Unit(amu): unit of mass that describes the mass of an atom or molecule. Neutron: a subatomic particle that has no charge and is located in the nucleus of an atom. Atomic Number: the number of protons in the nucleus of an atom. The atomic number is the same for all atoms of an element.

  6. More Vocabulary: Isotope: an element with a greater number of neutrons than protons. Mass Number: the sum of the numbers of protons and neutrons in the nucleus of an atom. Atomic Mass: the mass of an atom expressed in atomic mass units.

  7. THE END!!!

More Related