Crystals

Aim: To learn about a saturated solution and how to make crystals

Crystal video

Definition of solution: 

A liquid mixture, when something is dissolved into a liquid (eg: sugar in water) 

Definition of saturated: 

Having or holding as much as can be absorbed of something (when no more sugar or borax can be dissolved into the water)

In groups of three, you will make three different types of crystals and compare the results.

Borax Crystals

Borax Crystals time-lapse video

Ratio; 3 Tablespoons Borax per 1/2 cup water

Materials

1)Borax 

2)Water 

3)String 

4)Plastic Cup 

5)pipe cleaners 

6)peg

Process

Step 1: Add Borax into the plastic cup

Step 2: Add hot water into the plastic cup

Step 3: Stir the water with the borax 

Step 4: Create a star with the pipe cleaners 

Step 5: Attach the star to a peg 

Step 6: Place the peg and the star in the cup 

Sugar Crystals

Sugar crystals video

Ratio: 1 cup sugar to 1/2 cup water

Materials

1)Sugar 

2)Water

3)String 

4)Plastic Cup 

5)Popsicle stick 

Process

Step 1: Add sugar into the plastic cup 

Step 2: Add hot water into the plastic cup with the sugar 

Step 3: Stir the water in the Cup 

Step 4: Cut a small piece of string 

Step 5: Wrap the string around the popsicle stick 

Step 6: put the string in the cup of liquid 

Salt Crystals

Salt crystals time-lapse video

Ratio: 4 Tablespoons salt to 1/2 cup water

Materials

1)Salt 

2)Water

3)String

4)Plastic cup 

5)popsicle stick 

Process

Step 1: Add salt into the plastic cup 

Step 2: Add hot water into the cup with the salt in 

Step 3: Stir The water and salt 

Step 4: Wrap the string around the popsicle 

Step 5: put the string in the cup of liquid 

Step 6:

Findings

Describe your crystals in the table below.

Crystal Type	Shape (Describe the shape)	Size (of individual crystals)	Hardness (Crumbly to Rock Hard)
Borax	Crystal	Big	Hard
Sugar	Cube	Small	Crumbly
Salt	Cube	Medium	Hard

After watching the videos as a class, explain how the following crystals are formed:

Type	Explanation
Salt	Salt is created by the Evaporation of salty water (sea water) which contains dissolved Na+ and Cl- ions. One finds rock salt deposits ringing dry lake beds, inland marginal seas, and enclosed bays and estuaries in arid regions of the world.
Sugar	Refined sugar is made from raw sugar that has undergone a refining process to remove the molasses. Raw sugar is sucrose which is extracted from sugarcane or sugar beet. ... The sugar syrup is concentrated by boiling and then cooled and seeded with sugar crystals, causing the sugar to crystallize out.
Snowflakes	A snowflake begins to form when an extremely cold water droplet freezes onto dust particle in the sky. This creates an ice crystal. As the ice crystal falls to the ground, water vapor freezes onto the crystal, building new crystals the six arms of the snowflake.

Water Filter

Aim: To make a filtration plant using household materials.

Water Filtration Plant

What is the filtration?

Filtration is separating solids from liquids by adding a medium through which only the liquid can pass. 

Examples are:

1.  Water Filter 
2.  Air Filter 
3.  Pool Filter 
4. Oil Filter 

Materials

1.Funnel 

2.Container 

3.Filter Paper 

4.Sand 

5.Pebbles 

6.Dirty Water 

7.Scissors 

8.Cup 

Process - ( use verbs or doing words in each step )

Step 1

Cut the bottle in half 

Step 2

Put the top half upside down in the bottom half 

STEP 3

Add layers of filter paper, Sand, Pebbles 

STEP 4

Get 1 cup of dirty water 

STEP 5

Pour the dirty water into the bottle `

Findings

Write a short sentence about the water every 1 minute. 

Include 'How much water has filtered through', 'How fast it is dripping through', and 'How clear the water is'.

Minutes:43mins
Drops per minute: 52
Watercolor: Murky White
Conclusion: The first time it filtered through half of the water and it came out really fast and it was still really dirty, then it, unfortunately, got knocked over, it went everywhere. The second time we put another layer of filter paper on top and poured the water in slowly instead of just chucking it in like last time. The second time the water came out a lot slower and a lot cleaner.

Flight

FLIGHT

Aim: To learn about flight and aerodynamics. 

• In your groups of 2 or 3, you will make a paper plane and measure its distance and behavior.
• In groups of 2 or 3, you will make a water rocket and record its distance and behavior. 

Definition:

The action or process of flying through the air 


4 forces of flight:

1. Gravity 
2. Thrust 
3. Lift 
4. Drag 

Paper Plane:

Material:

1. Paper
2. Ruler

3. Paper clip 
Steps:

1. Make paper plane 
2. fly the paper plane 
3. record results 

Findings:

Plane Type	Distance	Behavior
Normal	2.2	curve
Ailerons	2.6	swoop
Paper clip	3.2	swoop

Conclusion:

After the experiment, the one that went furthest was the paper plane with a paper clip, because the weight of the paper clip helped stop the paper plan from lifting which meant it went straighter than the rest. The second flight was with Ailerons and that made the plane lift which made it go further but then it hit something and fell. The last one was a normal paper plane, the wings of the plane made the plane curve and it didn't glide.

Balloon Blowing With gases

 Aim: To see which mix creates the most gas.

Hypothesis: I think that all the balloons will blow up but I think the one with the sugar, yeast, and warm water will be slow and have the smallest effect, and I think that the vinegar and baking soda will be the fastest and have the biggest effect


Materials:
Balloon 3 

Yeast 
Warm Water 
Balloon 

Bottle 

Sugar 

Funnel 

Balloon 2 

Salt

Soda Water 

Bottle 

Balloon 

Funnel 

Balloon 1 

Vinegar 

Baking Soda 

Bottle 

Balloon 

Funnel

Steps:

Balloon 1 

1. Put Baking Soda into a balloon using a funnel.

2. Pour vinegar into the bottle with a funnel.

3. Put balloon onto the bottle 

4. Hold down the balloon as it blows up.

Balloon 2

1. Add salt into the bottle Using a funnel 

2. pour Soda Water into the bottle using a funnel 

3. Put the balloon onto the bottle 

Balloon 3

1. Add yeast into the bottle by using a funnel 

2. Add sugar into the bottle using a funnel. 

3. Pour warm water into the bottle 

4. Put the balloon onto the bottle 

My images:

Findings:

	Balloon 1 ( 3 tsp baking soda, ½ cup vinegar)	Balloon 2 ( 3 tsp salt, ½ cup soda)	Balloon 3 ( 2 tsp yeast, 1 tsp sugar )
Balloon Size (cm)	10.6cm	5.5cm	5.1cm
Bubbles	Small Amount	Medium Amount	Large Amount

       

Conclusion:  At the end of this experiment Balloon 1 is the biggest by far and Balloon 3 is the smallest, in fact, it didn't even blow up at all it just stayed the way it was even though the yeast at the bottom of the bottle was rising a lot. When we added the baking soda to balloon 1 shot up straight away, but when we added water to the sugar and the yeast the ballon didn't budge but a few minutes later the brown yeast started foaming up, whereas the others started looking like lemonade.  

Surfing

On the Yr, 7&8's went surfing at Sumner beach. We arrived at Sumner beach and lined up for wet suits even though I thought it was stupid to have to wear a wetsuit. We then got ourselves a surfboard and carried it back into a dry patch of grass and placed it in a circle facing the middle. They gave us a quick lesson then lined us up against a rocky wall and gave us a brief talk about water safety and rules about being in the water. Then we strode out onto the beach and out into the water where we started surfing. I remember it was a struggle trying to carry my board it was just so BIG. Once you got far out enough you could get big waves that could take you up to the shore. It was a lot of fun even though I only stood up once and only for a second before I lost my balance and went crashing into the waves and tugged under my board.

Story Board Creation

Today for art we created our storyboard for the stop motion that we are hoping to create by the end of this. Our stop motion is about 4 girls going to an island on a camping trip, and end up running into a wolf. two of the girls, after seeing the wolf run away and get lost. So the others try to find them. After we finished our storyboard we switched it with another group and we gave each other feedback on their work. This is the feedback we got. I like the wolf in the story it reminds me of a cold night. Next time tell us about what happened after the wolf chased them into the cave.

Home Chemistry

Aim- Our aim is to learn the names of 10 household chemicals and identify if they are a solid, liquid or a gas.

Equipment-Chromebook, Google, Docs

Steps-
1. First, we created a doc
2. Then we added in a table
3. We then searched the Chemical names and Whether they were a Gas, Liquid or a Solid
4. I then added in all of my info into the table
5. After that, I posted it on my blog

Conclusion- We learned about the different names of 10 household items and whether they are a solid, gas, or a liquid, like sugar it called sucrose, and baking soda is a solid.

 

Name	Chemical Name	Image	Liquid,Solid,Gas?
Salt	Sodium Chloride		Solid
Vinegar	Acetic Acid		Liquid
Baking Soda	Sodium hydrogen carbonate		Solid
Lemon Juice	Citric Acid		Liquid
Sugar	Sucrose		Solid
Lemonade  Bubbles	Carbon Dioxide		Gas
Onion Gas	Propanethiol  S-oxide		Gas
Milk	Aqueous		Liquid
Cornflour	Endosperm		Solid
Banana	Isoamyl Acetate		Solid