Dilution and Filtration Blog

 Intro: Last week in science we mixed copper nitrate with Sodium Hydroxide to make a bright blue precipitate.

1. Which test tube had the most concentrated sample of copper nitrate?

     - The first test tube

2. When we added water what were we doing to the concentration of the solution?

     - You are diluting it 

3. Which concentration of copper nitrate formed the most precipitate, Why do you think this is the case?

     - The first test tube because there was more chemicals in that test tube rather than the other 3. 

Key terms: 

 

Filtering Is when you can separate the solute (solid) from the solvent (Liquid).

Separate means to split apart.

Once the solvent has been filtered that is called the filtrate.

Solar oven

science

Hurumanu - Renewable Energy

Aim: To make a solar powered oven.

Materials: 

1. tinfoil   
2.   cellotape
3.   pizza box
4.   black plastic
5.   vivid
6.   ruler
7. straw
8. news paper
9. glad wrap
10. scissors
11. chocolate biscuit
12. marshmallow

Steps:

1.   assemble the pizza box
2.   cut a square in the lid of the pizza box
3.   put some tin foil on the inside of the lid
4. place a piece of black plastic on the bottom inside the pizza box
5. cello tape a piece of cello tape over the cut square on the lid
6.  wrap up tight some newspaper and make it into a square so it fits on the top of the black plastic on the bottom of the box
7. get a straw to hold up the lid
8. place your smores on a plate and put them into the pizza box oven to cook in the sun.

Findings:

Time	Temperature
0
15
30
45

Conclusion