Chemistry Blog on the effects of heat

Contraction: We learnt during chemistry that contraction is when hot air stuck in one little area hits cold air and rushes out diffusing and taking all air out of the small area that then gets sucked up into a smaller size. We did this by putting boiling water into a can and then tipping the can into an ice cream container full of cold water which then made the can implode.

Expansion: Expansion is where something gets bigger, like when you heat up certain metals they get bigger and can't fit in the same places anymore. We did this with a metal ball and a metal hoop, we heated up the ball so that it no longer fit through the hoop but when we cooled down the ball it was able to fit through the hoop.

Conduction: Conduction is where you get heat to slowly travel up something and the heat starts to make the solid it is travelling up vibrate and other things attached will fall off. We did this with a metal rod that we attached five pins with using Vaseline, we then turned on a Bunsen burner underneath the rod and watched the pins drop from the closest to the heat first to the furthest from the heat last. 

Convection in liquid: Convection is when a solid gets dissolved by hot water and it starts to diffuse out and all around the whole area. We did this with crystals that dissolved in water and then started to spread across the water until it was all the colour of the crystal.

Convection in solids and gasses: Convection is when a solid gets burnt so that it is less dense and it rises up because it is light enough. We did this with a piece of paper on tea leaves, we then lit the top of the paper and as it got lighter it started to lift off the tea leaves and into the air.

Social Studies term 2 reflection

Here is my reflection from my term 2 social studies 

ICT Semester 1 summary

ICT semester 1 summary

In ICT, I will be reviewing with you what I have been learning in ICT during terms 1 and 2.

Term 1

During weeks 2 and 3, we have been learning about cyber safety, and the things we did were make a kahoot, complete a typing.com course, and play a game called interland.

In week 4, we began using a tool called 'Microsoft Word' which is like docs and one of the features we used in word was 'copy and paste' 'spellcheck' 'heading' and 'search and replace'.

During weeks 5-6, we have been learning how to manage files and move between files and folders. We also learnt how to replace words with symbols.

In weeks 7 to 11, we used a new feature in word called 'drawing' which is similar to google drawing, and we used this feature to recreate posters and make basic designs.

Term 2

In weeks 1 to 3, we learnt how to create and use tables, diagrams, text boxes, and columns in word.

In weeks 4 and 5 we used a new tool named 'publisher'. It is similar to google slides and we used it to make greeting cards and calendars.

In weeks 6-8, we learnt a new tool called 'excel'. It is similar to google sheets and one of the main features we used was 'auto sum', which allowed us to add the sum of numbers in multiple cells. we also made charts using excel and the data we had put in.

Here are some examples of the work I have done:

My review of the tools I used during this class: I quite liked using word as it was similar to google docs which I use quite often. I didn't really like publisher as I will never make a greeting card or calendar. I also enjoyed excel because it was interesting using the different codes to make answers.

The dropping pins experiment

Today in chemistry we attached pins to a metal rod using Vaseline. We then put the rod above a Bunsen burner and timed how long it took for the Vaseline to melt and the pins to drop.

The times of our pins dropping were: 12 seconds, 17 seconds, 31 seconds, 51 seconds, 1 minute 15 seconds.

The reason the pins dropped is because the travelling heat made the Vaseline want to move with the vibrations and then the pins dropped because the Vaseline wasn't there anymore.