The piece that I am really proud of in science is my elements poster. I did elements poster on gold (AU). I think that my elements poster is really good because I showed how much I learnt during the unit (Chemistry) and I used a lot of the scientific vocabulary such as compound, element, molecule, etc. Though, if I were to improve in one area of my poster, I would try to add more information about how gold is found and what is is used for and why? I am quite proud of my work because I tried to gather as much information as I could and I proof read it to make sure that the information that I gather made sense. I really enjoyed making this poster because I got to tell my parents all about my class and about everything that we are doing.
- What is an atom? Describe the different parts and state where they can be found in an atom
- What is an element? Give three examples of an element and give a use in the real world for each of these elements
- What is a molecule? Give three examples of a molecule and give a use in the real world for each of these elements
- What is a compound? Give three examples of a compound and give an use for each one
- What is a physical change? Give an example
- What is a chemical change? Give a few different examples
1. Atoms are like building blocks. Atoms join together to form molecules which everything is made out of. Atoms are made of protons, neutrons, and electrons. Neutrons and Protons come from the nucleus. Electrons orbit around the nucleus.
2. An element is a substance made from one type of atom. Titanium is made up of Ti atoms and Titanium is used for plating ships (battle ships) and for armor, air force helicopters, etc. It is also used for dental implants and also the bodies of laptops are usually made out of titanium.
3. A molecule is a group of atoms bonded together. An example is h2o (water), our body is 70% water. So we need water to survive. Co2 (Carbon Dioxide) is what plants breathe in and they make oxygen out of it for us to breathe. And finally o2. We need o2 to breathe.
4. A compound is made up of two (or more) types of elements. One example is water (h2o), it is made up of hydrogen atoms and oxygen atoms. Another example is carbon dioxide (co2), carbon dioxide is made up by carbon and oxygen. Finally, salt (NaCl) which is made up of sodium and chlorine.
5. A physical change is when a solid, liquid or gas change without a change is the chemicals. For example like what happened when our class melted chocolate, the chocolate went from a solid to a liquid but the taste or the ingredients in it didn’t change.
6. A chemical change is where something (solid, liquid or gas) undergoes changes throughout a process. For example, when you boil water, it goes under a chemical change because it evaporates (disappears).
In science we have just finished our first assessment task. What we had to do was make a presentation or something and show what was in our food. Before we did the presentation we had to write up all the things we found for example:
My food was gum and I found that it had a lot of starch.
We had to do the experiment in class (of course). We had a double period which was about 1 hour and 30 minutes. It took me 30 minutes to do my experiments and record the data so then I started working on my presentation to get ahead.
I learned quite a few things during this assessment task for example:
- Fat is important because it provides warmth and also gives us energy
- If you have too much of one nutrient, it isn’t very good for you
- Protein is good for you because it helps fix your bones and also makes you bones stronger
In this assessment I think that I did quite well displaying my data in my presentation because I explained it quite well and I put pictures so that people can see what it looked like in real life. Also I thought that I was principled when doing the experiments, because I wasn’t fooling around and I got it done quickly because I wasn’t distracted. I am proud of my work and how I found out what types of nutrients gum had in it.
If I were to do this experiment again I would use more scientific words.
In science we have been learning about adaptations. We had to do an activity on the internet where we created an animal using different animals body parts. We had to make one that looked realistic and one that looked unrealistic but I couldn’t choose between two for the unrealistic one so I chose both. These are the unrealistic ones:
And this is the realistic one:
Today we did a project on density.
We put sand in a container and it was more dense then water so it sank but it was less dense then salt water so when we put the salt in to the water, the container floated.
Today in science we made slime.
We made the slime out of water, glue, borax powder and food colouring.
The first time I made the slime it was really hard. But then the second time I made it, it was nice and soft and looked like this:
Here are the steps to making slime:
1. get a cup or bowl and if it’s a cup, put in around 1/3 of glue and if it’s a bowl, about 1/4 of glue.
2. Choose the colour you want to have an put it into the glue. Then mix the glue and the colouring together until the have made the colour you want
tip: don’t put in to much colouring because your hands will get really messy when your playing with the slime.
3. Put the borax powder in water and mix it, then pour the borax and water into the glue and colouring and then mix them together until they bond together but make sure that the glue doesn’t dry out because then it will stick to the spoon and the slime won’t stretch.
tip: When the borax and water and the glue and colouring have mixed together, if the mixture is still watery, add more borax and water to the slime and keep mixing.
Thank-you for reading and I hope that you will have fun with your homemade slime.