Your SlideShare is downloading. ×
Chemical Changes
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Saving this for later?

Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime - even offline.

Text the download link to your phone

Standard text messaging rates apply

Chemical Changes

946
views

Published on

Published in: Education, Business, Technology

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
946
On Slideshare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
26
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. Chemical Changes S
  • 2. What is a chemical change? A chemical change is a change in which one or more new types of matter form. In a chemical change materials react with each other. They combine in new ways to form other materials.
  • 3. What is a chemical change? The ability of a material to react with other materials in a certain way is a chemical property. You cannot observe a chemical property of a material without changing it into something different.
  • 4. What is a chemical change? One chemical property is the ability to burn. When a material burns it reacts quickly with oxygen in the air. Heat and light are given off.
  • 5. What is a chemical change? Another chemical property is the ability to rust. Iron forms rust when it reacts with oxygen.
  • 6. What is a chemical change? When the log burns, materials in the wood combine with oxygen in the air. They form ash, smoke, and carbon dioxide.
  • 7. What is a chemical change? The apple core turns brown when it reacts with oxygen in the air.
  • 8. What is a chemical change? Black tarnish forms on the surface of the silver spoon. The tarnish is a different material from silver.
  • 9. What is a chemical change? Orange rust forms on metal when it gets wet. Iron in the metal reacts with oxygen in the water. Rust is not iron or oxygen. Rust is a new material.
  • 10. The signs of a chemical change A change in color is often a sign of a chemical change. Foods change color when cooked, vegetables and fruits turn color when they rot, egg whites go from clear to white as they are cooked.
  • 11. The signs of a chemical change Some chemical changes cause gases to be given off. If you add baking soda to vinegar, the liquid bubbles and gives off carbon dioxide. Also, the temperature goes down. If the temperature of a material changes without the material being heated or cooled, a chemical change has taken place.
  • 12. The signs of a chemical change Most chemical changes can not be reversed. The ones that can are extremely difficult to.