DNA Extraction Experiment

 Aim: Extracting DNA from a kiwi fruit

Method: 

1. Mush half a kiwi fruit in a zip lock bag with a splash of water and add a small teaspoon of salt

2. Strain the solution through the cloth into a beaker 

3. Add a squirt of dishwashing liquid and stir. 

4. Pour into a test tube

5. Place the test tube in a beaker filled with WARM water

6. Leave for ten minutes 

7. Slowly pour 5mL of methylated spirits on the side of the test tube.

Results:

 

Discussion: Where do you find DNA?

DNA is located in a cell called the nucleus

What makes up DNA?

DNA is made of chemical building blocks called nucleotides

Conclusion:

The experiment did work we got to see the DNA separate from the mushed kiwi fruit and I wouldn't change anything from the experiment

Making a metal oxide - science

 Metals and oxygen

Aim: To make a metal oxide and observe the difference in properties of the products compared to the reactants.

Equipment:

• A piece of magnesium

• Bunsen burner 

• Safety glasses 

• Metal scissor tongs 

Method:

1. Light your bunsen burner. 

2. Hold your piece of magnesium in the scissor tongs. Ensure you are holding onto the very tip of the magnesium. 

3. Place the other end of the magnesium into the Bunsen flame (at the top of the blue fame)

4. When magnesium begins to burn, do not look directly at it, as the light emitted can permanently damage your eyes. 

Observation: The magnesium lit up and sparked up for a while and then dimed out 

Discussion: Magnesium + Oxygen → Magnesium Oxide, Using the scissor tongs and the magnesium metal being held over the blue flame made the magnesium light up and burn for a few seconds. 

Conclusion: This experiment went very well and I learned that magnesium lights up when being burnt, I would not change anything during this experiment. 

H pop - Science

Testing for hydrogen gas

Aim: To show that hydrogen gas is produced when a metal reacts with acid.

Equipment: 

• Test tube 

• lighter

• A boiling tube 

• Wooden splint

• A bottle of acid

• A piece of metal

• Safety glasses 

Method: 

1. Add a sample of metal to your test tube. Add 2 ml of acid. 

2. Carefully invert your boiling test tube above the test tube containing the metal and acid 

3. Hold the test tubes together for a few minutes, allowing time for the inverted boiling tube to full with gas 

4. When you think the test tube is full (wait a minute) your partner should light a wooden stick 

5. Carefully but quickly tilt the boiling tube full of gas upwards and insert the burning splint into the mouth of the test tube.

Results: it made a popping noise 

Discussion: The reactants began to bubble and smoke 

Conclusion: The experiment was successful and popped as it should have and what I would change is nothing. 

Model atom - Science

 Model atom

Aim: To make a model atom

Method:

1. Choose an atom to make (one between hydrogen and neon)

2. Work out how many protons, neutrons, and electrons 

3. Assign protons and neutrons to a particular colour bead.

4. Get a ball of blue tac and stick the protons and neutrons to this to make your nucleus.

5. Cut the appropriate electron shells and draw in the electrons with vivid.

6. Connect the nucleus and electron shells with a piece of string 

7. Create a label to go above the model so people know what you have created.

Results -

For the model of the atom, I chose to do carbon 

 

Discussion - 

The atomic number for carbon is 6 and the mass number is 12. There are a number of 6 protons,6 electrons, and 6 neutrons.

2 facts about carbon - 

• Carbon gets its name from the Latin word carbo, which means "coal."

• Carbon occurs naturally as carbon-12, which makes up almost 99 percent of the carbon in the universe

Conclusion - 

Yes it did work and I wouldn't have changed anything