Changing Matter - PowerPoint PPT Presentation

Loading...

PPT – Changing Matter PowerPoint presentation | free to download - id: 76ad71-YTA2O



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Changing Matter

Description:

Physical & Chemical Changes * Chemical properties of matter describes its – PowerPoint PPT presentation

Number of Views:140
Avg rating:3.0/5.0
Slides: 18
Provided by: Genev173
Learn more at: http://www.mswassonsclass.com
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Changing Matter


1
Changing Matter
  • Physical Chemical Changes

2
Matter
  • Matter is everywhere.
  • Matter is anything that takes up space and has
    mass.
  • Matter is constantly experiencing both chemical
    and physical changes.

3
What different ways can we describe these items?
Use your 5 senses!
  • Properties
  • How we identify something.

4
Matter has properties
  • Two basic types of properties that we can
    associate with matter.
  • Physical properties
  • Chemical properties

5
Physical Properties
  • Anything that can be observed without changing
    the identity of the substance. (Tends to be
    measurable.)
  • melting point
  • boiling point
  • electrical conductivity
  • color
  • ANY STATE CHANGE of MATTER!
  • density
  • thermal conductivity
  • ductility
  • Malleability

6
Chemical Properties
  • The way a substance may change or react to form
    other substances
  • heat of combustion
  • reactivity with water
  • PH
  • Oxidation
  • Flammability
  • Reactivity to other chemicals

7
Properties Defined
  • Luster shine
  • Ductility ability to be stretched/split into a
    wire
  • Malleability ability to be hammered into thin
    sheets
  • Solubility ability to dissolve
  • Viscosity resistance to flow
  • Tarnish thin layer of corrosion on metals from
    a chemical reaction
  • Flammability ability to burn or ignite
  • Reaction one set of chemicals transforms into
    another set of chemicals or substances

8
Matter can be changed two ways
  • Physically
  • Physical reaction
  • Physical change
  • Chemically
  • Chemical reaction
  • Chemical change

9
Physical Changes
  • Do NOT CHANGE THE TYPE OF MATTER
  • Nothing new or different is formed
  • Could be a change in
  • Mass
  • Volume
  • Density
  • Change in state
  • Color
  • Shape

Size
10
Examples of Physical Changes
  • Boiling
  • Freezing
  • Dissolving
  • Breaking
  • Making a mixture
  • 2 or more types of matter (substances) mixed
    together
  • Not in specific amounts
  • Can be separated physically

11
Chemical Changes
  • The composition of the substance changes.
  • The substances present at the beginning of the
    change are not present at the end new substances
    are formed. The change cannot be undone.

Picture from www.chem4kids.com
12
Chemical Changes
  • Evidence of a chemical reaction
  • Formation of gas
  • Formation of precipitate
  • Change in color
  • Change in energy
  • Endothermic Absorbs heat energy (gets cold)
  • Exothermic Releases heat energy (gets hot)

13
Chemical Changes
  • Atoms are re-arranged, NOT created or destroyed

14
Law of Conservation of Matter
  • Matter is conserved ? type of atoms does not
    change
  • Nothing is created or destroyed

15
Law of Conservation of Mass
  • Mass is conserved ? amount of atoms cannot change
  • Nothing is created or destroyed

16
Example
  • How could you PHYSICALLY change your lab table?
  • How could you CHEMICALLY change your lab table?

17
To Do
  • Complete the Pink Practice Worksheet.
  • Check your answers with your shoulder partner,
    then your team.
  • Read through Ch 4 until we go over the worksheet
    answers.
About PowerShow.com