Word problems

Fairy Tales

DNA

smallest to biggest organisms

the sniper

Mixing dish soap and milk.

Aim:  What will happen if you mix full fat milk and dish washing liquid together?


Hypothisis: Milk and dish soap is like water and oil, it will not mix together. Dish washing liquid is made to clean and erase fat from your dirty and greecy dishes. With that said the dish washing liquid will try to seperate the fat from the milk.


Equitment:

• A wide plate
• A few cottonbuds
• Full fat milk
• Dish washing liquid
• Food coluoring. 

Method:  When we did this experiment we had to do 3 steps.

Step 1, pour the milk into your wide plate until it fills the whole plate.

Step 2, Put drops of different food colours.

Then put some dish washing liquid onto your cotton bud.

Step 3, then dip your cotton bud into the plate.

Observation:

When we dipped the cotton bud into the milk we saw the food colouring move to the side of the plate, as if it was running away from the cotton bud.

Conclusion: This happened because the dish washing liquid separated the fat from the milk, so we saw the milk separating or moving as this was happening. 

DNA

Onion Cells

Aim:

Finding a clear picture of onion cells?

Hypothesis:

The magnification I think we’ll be able to the onion cells is 40.

Equipment:

• Onion
• A glass slide
• A cover slip
• Tweezers
• A blue stain
• A microscope

Method:

The first thing you need to do is get your pair of tweezers and peel a small amount of onion
skin, you want to peel one layer of onion skin and put it on your microscope slide (if you do
n’t know what it is search it up). After you put your onion skin on your put some saline
water to flatten your skin on your slide. When your done put your blue stain on, then lastly
put your cover slip on so you don’t have to wait for it to dry.

Observation:

At ten times you can still see the outline of the cells. The onion cells look a bit like fly wings
with dots in the middle.

Fly wings

onion cells