Mode Mean and Median The 3 M's

Today in class (8/4/19) we improved in using Mode, Mean and Median. We did this to learn three new strategies, after all of this I still don't think I will use the strategies a lot because they they take a long time but they are good for difficult questions most strategies I know are much quicker to use.

(Update (10/4/19) We used Mean to figure out two questions 1. What was the mean temperature in Christchurch over the past 5 days? 19 18 16 15 20 the answer is 18, the next question is 2. What is the mean temperature predicted for the next 5 days in Christchurch? the answer is 13 and the last question is 3. What conclusion can you make for the two mean results? and my answer was it is getting colder because global warming isn't true or it's a slow progress, or its because it getting closer to winter. Overall knowing how Mode, Mean and Median work is useful.

Household Chemicals

Aim: To learn the names of 10 household chemicals, their elements, and reactions with other substances.

Equipment:

1. Dishwashing Detergent

2. Lemon

3. Salt

4. Vinegar

5. Sugar

6. Air Freshener

7. Onion

8. Lemonade

9. Bleach

10. Baking Soda

Task 1: Put the chemicals in a chart with the titles - Name, Chemical ingredient(s), Image, Solid/Liquid/Gas.

Name	Chemical	Image	Solid/Liquid/Gas
Salt	Sodium Chloride		Solid

COMPOUNDS, MIXTURES AND REACTIONS

Aim: To combine two compounds to see if there is a reaction.

Definitions:

1. Element; A single form of a chemical 
2. Compound: A mixture made up of 2 or more elements
3. Reaction: A process in which chemicals mix together to form a new substance.
4. Mixture: When two or more elements are mixed together.

Task 2: Place your household chemicals from your first chart into a second chart that has two compounds together. An example has been made below. 

Note: You will need to use the internet to find out how these compounds react together.

Compounds	Method	Observation of reaction
Vinegar Baking Soda	A teaspoon of the baking soda was placed in a cup. 3 teaspoons of vinegar were then placed into the cup.	The mixture bubbled, fizzed and overflowed.

When a reaction occurs between compounds / elements there is always an end result in the form of a solid/liquid or gas. This always results in a new element being formed. For this process to occur, one of the results can be hot or cold.

Task 3: What is the reaction that results when these compounds are mixed?

1. Golden syrup and Baking Soda:
2. Baking Soda and Vinegar:
3. Bleach and Vinegar:
4. Gummy Bears and Potassium chlorate: 

Chromatography - Science

Aim: To separate colours by using the process of chromatography.

Definition: A technique for separating the different parts of a mixture / solid using liquid.

Rainbow paper

Materials:

1. Tube

2. Pens

3. Water

4. Cup

5. Chroma Paper

Process:

Step 1: get your cup

Step 2: Fill it with water

Step 3: then put three coloured dots 

Step 4: then dip it in the cup

Step 5: wait... wait

Step 6: pull the paper out and see what you have done

Findings: Write about what happened.
Unfortunately I did the experiment a few weeks ago so I don't remember  
Reflection: What have I learnt from this experiment?Unfortunately I did the experiment a few weeks ago so I don't remember