Independent+Tasks

__Independent Task Week 2__

1. You are required to complete the solubility experiment. You need to make careful observations and write them down carefully. STEP 1 - Half fill a beaker with COLD water. STEP 2 - Drop a teaspoon of salt into one of the beakers. Time how long it takes to dissolve - with stirring - without stirring Record your results. STEP 3 - Repeat steps 1 and 2 with Sugar, washing powder, sand and instant tea. STEP 4 - Repeat the experiment this time using warm (NOT HOT) water.

__Independent Task Week 3__ Write up candle experiment in their books using one of the scientific planners in the science area of the SLU. Find out what a gas, solid and liquid is. Include definitions. Where might you have seen them before? Can you name some of each? This link below will take you to a website with some cartoons that help to explain solids, liquids and gases! Solids Liquids and Gases cartoon

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 * Independent Task Week 4** __

Select which investigation planning sheet you would like to use and plan your 'Chemical Reaction In A Bag' experiment plan.

Below are the steps you will need to follow and the materials you will need:

__ **Purpose:** __ To observe a chemical reaction and make careful notes.

__ Materials: __ Salt (Calcium Chloride) Baking Soda (sodium hydrogen carbonate) Indicator (phenol red or bromthymol blue are the best) Sandwich Bag (regular and zip lock) Spatula or a Plastic Spoon 10 ml cylinders

__ **The Procedure:** __

1. Put 2 scoops of road salt and 1 scoop of baking soda into a ziplock bag

2. In another bag (NOT ZIPLOCK) put 10 ml of indicator.

3. Place the bag containing indicator inside the ziplock bag with salt and soda. Make sure the indicator bag is completely stuffed into the ziplock bag.

4. Carefully squeeze all the air out of the ziplock bag.

5. Zip the top of the ziplock bag.

6. Invert the bag so that all the contents of both bags combine. **Watch and make your observations!

Here are the observations you can look for. These may include mass (size) changes, colour changes, temperature of the materials, sounds, and any other changes you may see.

__Independent Task Week 6__ **

You need to write a definition of Physical Change IN YOUR OWN WORDS. If it is not in your words - you **//__must__//** reference where you got your definition from.

You also need to plan your Mystery Powders experiment as much as you can. You can use a planning sheet if you wish, or if you want to try and come up with your own style - go for it! You need to complete as much as possible or you will not be able to complete the investigation next week.

MYSTERY POWDERS INVESTIGATION - Each group of students will receive 5 mystery powders. They will be marked A, B, C, D and E. Each of these substances will have 5 tests conducted towards them. Students will be exploring chemical and physical properties, changes and of course - reactions!!

YOU WILL NEED - 5 powders - A B C D E each in zip lock baggies Iodine Water Vinegar Heat source - Candle/ Match Aluminum foil METHOD - Students will conduct each experiment with each mystery powder. 1 person in each group will do 1 experiment Experiment 1 - Place 1-2 drops of iodine on each powder. Note any colour changes (is the powder now a different colour than the original colour of the iodine? Experiment 2 - Place 1-2 drops of water on the powder. Note any changes Experiment 3 - Place 1-2 drops of vinegar on the powder. Note any changes Experiment 4 - Taste a small amount of each powder. Note: these powders are safe to test. IODINE is NOT safe. Taste only powders. Experiment 5 - Each each powder. This can be done by putting a small sample of each powder on a metal lid. Label each powder. Hold the lid with the peg over the candle and carefully note any changes. Complete Mystery Powders recording sheet. GLUE THIS IN YOUR BOOKS!!!

INDEPENDENT TASK WEEK 7 During this week's independent session, you and your DKU team need to complete your experiment planner. You can only write up this experiment if you have been given approval by your workshop teacher. You will be conducting this experiment in the next few weeks so you and your team must be prepared!! Your experiment plan must be written up in the correct format.

If you have completed this task, you need to go back through any of your previous tasks and polish them off.

__**INDEPENDENT TASK WEEK 8**__
You need to complete a scientific diagram of an: - ENDOTHERMIC reaction - EXOTHERMIC reaction

Once you have completed this you can make sure that you have completely finished all other tasks for the term, and maybe complete some extra research on Endothermic and Exothermic experiments.