Success for experiment

It's been a week since we did our experiment and we are proud to announce that it was a big success. Even though we had a few minor problems we still loved doing our experiment. Our favourite part was when the dry ice bubble was just one big bubble when it was forming. It was a bit annoying because we couldn't get the bubble to start forming ( henry was good at it). The last time the ice bubble exploded the ice bubble came out with dry ice in it. When we threw it onto the  grass the dry ice looked like pearls. When the ice bubble was forming it was really cold we had fun touching it and popping it, ( the year sevens that came to watch were jealous because they weren't allowed to touch it).

Giulia and Lucy out

After dry ice experiment

THIS IS WHEN THE DRY ICE BUBBLE HAS RISEN AND SOON GOING TO POP!!! :)

WHEN THE DRY ICE BUBBLE HAS RISEN WITH MINI BUBBLES WITH IT!!! :)

WHAT THE DRY ICE LOOKS LIKE!!! :)

WHEN THE BUBBLE IS STARTING TO COLLAPSE ONTO THE TABLE!!! :)

 WHEN WE WERE FELLING THE TOP OF THE BUBBLE!!! :)

We had a fun time with our dry ice experiment especially with the rest of the grade 7's and our teachers were watching us do it.  We did the experiment about 5 or 6 times. Sometime it would be all bubbly but the other time it was perfect bubble. It looked so cool. :) :) :)

we aren't ready

We aren't ready because only one person has brought their stuff in. We still need:

 Dry ice from Henry
 Bowl from Nick
 Detergent and rag from Giulia (it's ready but at her house)
 and I Lucy have brought in my stuff which is an esky and cups

Over and out Team 6

Definition Time

Team Six, Define sublimate

sub·li·mate/ˈsəbləˌmāt/

Verb: (esp. in psychoanalytic theory) Divert or modify (an instinctual impulse) into a culturally higher or socially more acceptable activity.

 

Basically, it means something has been changed into something better.

Dry Ice Facts

• Dry ice is solid carbon dioxide.
• CO₂ changes from the gas to solid phase at -78.5°C (−109.3 °F).
•  Dry ice should only be exposed to open air in a well-ventilated environment because otherwise it will choke you and you will die from suffocation.
• The extreme cold makes the solid dangerous to handle without protection due to burns caused by frostbite
• The first published observation of dry ice was in 1835 by French chemist Charles Thilorier. He noted the formation of dry ice when a container of liquid carbon dioxide was opened.

Finalizing decisions

Our final decisions on who's bringing what materials have been made:

Lucy: Plastic cups (x4) for soaking the cloth strips in detergent & esky for containing the dry ice

Giulia: Detergent and the strips of cloth

Henry: Dry Ice

Nick: Plastic bowl for making the dry ice bubble in

More Deciding - Materials We Need

We have decided that we are going to perform the experiment outside the back of the Resource Centre. Lucy isn't here so we're wondering what her opinion is on the idea. We are now deciding who is bringing what for next week. Henry is bringing the dry ice, Nick is bringing the plastic bowl and Giulia is bringing a cloth and the dish-washing stuff (detergent)

Team 6,

Out

Teacher Comments

Simple safety precautions

Wear safety gloves and glasses during all of the demonstrations.
The main hazards and according safety precautions for using dry ice are:

HAZARD 1: Extremely low temperature (–78 degrees C) can cause freeze burns
SAFETY PRECAUTION: Wear gloves when handling dry ice or use tongs or spoon
NOTE: When performing demonstrations, wear gloves even when you are using tongs

HAZARD 2: Expansion of carbon dioxide gas produced can generate high pressures in sealed airtight containers
SAFETY PRECAUTION: Store dry ice in non-airtight containers. Never store in airtight containers with screw caps.
NOTE: Storing dry ice in a standard esky with the lid on is safe as the carbon dioxide can leak out through small gaps between the lid and esky

HAZARD 3: Carbon dioxide gas produced is an asphyxiant in high concentrations
SAFETY PRECAUTION: Use in large, well ventilated areas. This hazard is negligible in the small quantities required for the demonstrations provided.

Dry Ice to the Rescue!

New update:

We found out where to get dry ice. Most butchers, ice-cream stores or grocery stores. Apparently adults should handle dry ice with gloves and avoid directly breathing in the vapour. We can handle it though. Giulia has suggested that we wear safety goggles and we all agree with her on that.

Team 6, Out. (Again)

Judgement Day

Today we decided what experiment we are going to do. It is a dry ice bubble. We watched the following video (http://www.youtube.com/watch?v=76CNkxizQuc). It was so cool! It exploded into cold steam-ish. [Very technical language there=)] We are now finding out where to get dry ice.
Team 6, Out.

Debating on an idea

We have found two ideas which is 

dry ice bubble

or

an easy lava lamp

the site we used was 

http://www.sciencekids.co.nz/experiments.html

Day 1

Today we are going to decide on a science experiment.

We have a few ideas which are:

Light bulb oven

Lava Lamp

Dry ice bubble

but where not sure yet!!! 

The First Meeting

We met to choose our team and our topic.