Tag: 2023

Neutralisation

Neutralisation

Aim: The aim of this experiment was to 6 colours of the rainbow by neutralising it using acids, and bases.

Equipment: For our experiment the equipment we used was sodium hydroxide as our base, hydrochloric acidas our acid, 6 test one for each colour, universiel indicata to show the colour and a testtube rack to hoe lthe test tubes. 

Method: We added 2ml of acids in each test tube then added 10 drops of universal indicata so that teh colours would show up. Then after adding that we added varying amounts of sodium hydroxide our base to create the colours of the rainbow. 

Results:

Discussion: 

What is an acid? Acids are substance composed of one or more hydrogen atoms chemically bonded to one, or a group of, non-metal atoms. 

What is  base? Bases are  usually metal oxides, metal oxides, metal carbonates or metal hydrogen carbonates. Many bases are insoluble (they do not dissolve in water). If a base does dissolve in water we call it an alkali.

Describe the process of neutralisation:  A chemical reaction occurs when you mix together an acid and a base. The base cancels out the effects of the acid. The reaction is called a ‘neutralisation’ reaction because a neutral (pH 7) solution is made if you add just the right amount of acid and base together.

Conclusion:

Did it work? Yes I would say that my group had really good results in it working 

Would you do anything different? I dont think I would change anything about the experiment because I would say that our experiment had really good results.

Model Atom

Model Atom

Aim: The aim of this project was to create a model atom using blu tac, paper, scissors, vivid, tape, beads and string. We did this to show our understanding of atoms and how they are constructed. 

Equipment: When making this modal we used a variety of materials to make our modal atom which includes blu tac, paper, scissors, vivid, tape, beads and string. 

Method: 

  1. Pick your element and get your equipment. -(blu tac, paper, vivid, scissors, tape, beads and string) 
  2. Get beads, two sets of your elements’ atomic number beads of your atomic number two different colours, one colour for electrons and another colour for neutrons.
  3. After getting all your beads you stick them all onto a piece of blu tac trying to create are rough circle. 
  4. Then setting your “atoms” to the side you’re going to cut out two rings one a little bigger than the other and one big enough for your “atom” to fit and have space around it.
  5. After cutting your circles out you’re going to draw the number of protons your elements has. 
  6. Then at the back of your cut-out rings your going to get a string long enough to let your atom hang. 
  7. At the back of your rings, you’re going to stick your string down onto the rings using tape.
  8. Then in the middle try and stick your blu tac “atom” onto the string. 
  9. Then create a label of your element and you’re done. 

Results:

Discussion:

  • How many protons, electrons and neutrons does your atom have?

For my element, I have chosen to do oxygen which has 8 electrons, 8 neutrons and 8 protons.

  • Where do you find each of these particles in the atom?

For my element, you can find 8 electrons and 8 neutrons in the atom. Then find 2 protons on the first level shell then on the second shell you can find 6 protons and all together you have 8 protons. 

  • What is the mass and atomic number?

For oxygen, its mass number is 16 and for its atomic number, it is 8.

  • What do these numbers mean?

The atomic number is the number of electrons and protons your element has. And the mass number is the protons plus neutrons. 

  • 2 interesting facts about your atom

 Oxygen is the most common element on Earth and makes up 50% of the Earth’s crust.

  • What is isotopes?

Isotopes is when each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei

 

Did It work? I think that my model of oxygen and how the atom is constructed turned out really well.  

Would you do anything differently? I think that the only thing I would have done differently if I had to was to change my element other than that I think that I wouldn’t change anything.