the nature of matter
Download
Skip this Video
Download Presentation
The Nature of Matter

Loading in 2 Seconds...

play fullscreen
1 / 11

The Nature of Matter - PowerPoint PPT Presentation


  • 406 Views
  • Uploaded on

The Nature of Matter Chapter 2 Section 1 Atoms All matter is made up of atoms. Atoms are the smallest units of matter. Atoms consist of two regions: Nucleus Electron Cloud Subatomic Particles There are 3 subatomic particles: Protons ( positive charge) Neutrons ( neutral charge)

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'The Nature of Matter' - HarrisCezar


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
the nature of matter

The Nature of Matter

Chapter 2

Section 1

atoms
Atoms
  • All matter is made up of atoms.
  • Atoms are the smallest units of matter.
  • Atoms consist of two regions:
    • Nucleus
    • Electron Cloud
subatomic particles
Subatomic Particles
  • There are 3 subatomic particles:
    • Protons (positive charge)
    • Neutrons (neutral charge)
    • Electrons (negative charge)
  • Protons and neutrons are in the nucleus.
  • Electrons are in the electron cloud.
more chemistry terms
More Chemistry Terms
  • Element—pure substance made up of only one type of atom
    • Examples: gold, oxygen, iodine
  • Compound—pure substance made up of two or more types of atoms in definite proportions
    • Examples: H2O, CO2, NH3
  • Molecule—smallest unit of a compound
chemical bonds
Chemical Bonds
  • Compounds are held together by chemical bonds.
  • There are two main types of chemical bonds:
    • Ionic Bonds
    • Covalent Bonds
types of bonds
Types of Bonds
  • Ionic Bonds
    • Formed between metals and nonmetals
    • Forms positive and negative ions
    • Electrons are exchanged
  • Covalent Bonds
    • Formed between nonmetals and other nonmetals
    • Electrons are shared
solutions and suspensions
Solutions and Suspensions
  • Mixture—a material composed of 2 or more substances that are physically mixed (but NOT chemically combined)
  • Solution—a type of mixture where the molecules are evenly distributed
  • Suspension—a mixture where the particles are NOT completely dissolved
solutions
Solutions
  • Solutions have two parts:
    • Solute—substance that is dissolved
    • Solvent—the liquid in which the solute dissolves
ph scale
pH Scale
  • The pH scale ranges from 0 to 14 and shows the concentration of H+ ions.
  • The lower the pH, the more acidic the solution. (Acid = below 7)
  • The higher the pH, the more basic (alkaline) the solution. (Base = above 7)
acids and bases
Acids and Bases
  • Pure water has a pH of 7, which is neutral.
  • Acids are compounds with more H+ ions than pure water.
    • pH of Strong Acid = 1 - 3
    • pH of Weak Acid = 4 – 6.9
  • Bases are compounds with more OH- ions than pure water.
    • pH of Strong Base = 11 - 14
    • pH of Weak Base = 7.1 - 10
ad