CHEMISTRY...SPM TRIAL 2012 (SBP) & ANSWER SCHEME

BEWARE OF...

 

FOO ADDITIVES??

 

FOOD ADDITIVES are substances added to food to preserve flavor or enhance its taste and appearance.

 

Examples of food additives:

A few types of additives that commonly used in our food:

 

 

DO YOU KNOW???

 

 





The Cleansing Action of SOAPS & DETERGENT

1. This is the structure of soap & detergent: contains hydrophobic tail & hyrophilic head

 

Soap has COO- head while detergent has SOOO- head

 

2. Functions of soap & detergent:

• Reduces the surface tension of water
• Head dissolves in water & tail dissolves in grease
• Rinsing washes away these grease droplets & leave the surface clean.

3. The cleansing action of soap:

These are the steps in order to make our clothes clean...

CHAPTER 5: CHEMICALS FOR CONSUMER

HOW ARE WE DEALING WITH OUR LAUNDRY??

HOW ARE WE GONNA CHANGE THESE DIRTY CLOTHES TO......

VERY CLEAN CLOTHES LIKE THESE??

We can make it real....by using DETERGENT

BUT DO U KNOW WHAT ARE THE DIFFERENCES BETWEEN 

SOAP & DETERGENT??

  

LETS SEE THE DIFFERENCES....

Chapter 5 chemical 4 consumers from leonling

CHEMISTRY FORM 5 (CHAPTER 4: THERMOCHEMISTRY)

MID YEAR EXAM PAPERS (CHEMISTRY FORM 5)

Chemistry paper 1 from Ina Amalina

Chemistry Paper 1

Chemistry paper 2 from Ina Amalina

Chemistry Paper 2

Chemistry paper 3 from Ina Amalina

Chemistry Paper 3

REDOX REACTION

Lets get closer with oxidation & reduction (Redox reaction)

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