AIM: What is a compound What is a compound? AIM: What is a compound Identify exactly how atoms...
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Transcript of AIM: What is a compound What is a compound? AIM: What is a compound Identify exactly how atoms...
AIM: What is a compound
What is a compound?
AIM: What is a compound
Identify exactly how atoms combine together to form compounds
AIM: What is a compound
Compound Compound
Chemical ChangeChemical Change
Physical ChangePhysical Change
Compound Compound
Chemical ChangeChemical Change
Physical ChangePhysical Change
AIM: What is a compound
Demonstration
1. Mr. Z will heat some sugar in a test tube
2. Sugar is C6H1206
3. What do you see happens4. First the sugar turns into a liquid5. And then just black.6. The black is solid carbon “C’7. The O and H were released as a gas
AIM: What is a compound
Chemical or physical Change ?
• Not sure
• Try putting the black residue on your breakfast cereal !
AIM: What is a compound
Compund
• Is a new substance produced when two or more elements chemically combine
• The new compound will have physical and chemical properties that will be different from the original elements
AIM: What is a compound
Example
• Pure Chlorine will kill you (Cl)• Pure Chlorine is a gas at room
temperature• Who know what Chlorine is.• Sodium (Na) also by itself is harmful• Chemically combine the two and
what do you get ?
AIM: What is a compound
Example
• Sodium (Na) also by itself is harmful
• At room temperature, sodium will explode into a fire
• Chemically combine Chlorine and Sodium and what do you get
AIM: What is a compound
AIM: What is a compound
AIM: What is a compoundUnlike Chlorine, salt
wont kill you.
Unlike sodium, it will not burst into flames
Salt has its own unique properties
Salt is a new compound
AIM: What is a compound
Element #1
Element #2
Element #2
New Compound
New Chemical & Physical Properties
AIM: What is a compound
Last Example
Chemical change was two or more elements forming a new compound
AIM: What is a compound
Element #1
Element #2
Element #2
Compound
Chemical & Physical Properties
AIM: What is a compound
Last Example
Chemical change was separating CHEMICALLY an existing compound into its original SEPARATE elements
AIM: What is a compound
Question
Can two compounds combine chemically to produce a NEW compound
YES