- Sugar in My Tea
1. people cannot drink tea or cofee without sugar
a)add spoonfuls of sugar and stir
i) sugar crystals dissapear
ii) dissolved in water
iii) Sweeter the taste, more sugar is dissolves
Shape Up
1. If you use a glass beaker instead of a mug
a) see just ow easily the sugar dissolves
2. Many different kind of sugar we can buy
a) fine powders
i)caster sugar
b)big lumps of sugar
c)all contain the same chemical compound
i)called sucrose
- extracted from :
- sugar cane or
-from sugar beet
d)sucrose particles are the same in each type of sugars
Temperature Effects
1. one way to help things dissolve is to use hot water
a)This is why we wash clothes in warm water, not in cold water
i)clothes don't dissolve
ii)some of the dirty stains do dissolve
b)Any soluble materials in the clothes will dissolve more at a higher temperature
2. We add detergent to help with the cleaning process
3. Water molecules must come into cantact with solid
a) such as sucrose, to let it and allow it to dissolve
4. solubility will change with temperature
Questions and Answers:
1. HOW DOES THE TEMPERATURE OF THE SOLVENT AFFECT THE AMOUNT OF SOLUTE THAT IS DISSOLVED?
The hotter the temperature, the more soulute can be dissolved, because heat increases molecular motion, therefore,
- BONUS QUESTION:Why do you think the temperature affects the amount of solute dissolved?
It is because different temperatures affect the movements of the particles, so if it is hot, the molecules will will contact and more solute will be dissolved.