Home Chemistry - Forensic Science

Home Chemistry - Forensic Science

Forensic Science

1. Write a the definition of forensic science in your own words?

https://en.oxforddictionaries.com/definition/forensicto help find criminals help the police

2. What are 5 different things that forensic scientists do?
    Look at the "What you will do" section on the careersnz website.

Finger prints

Aim: To look at the different types of fingerprints.

Materials: 

1.   
2.   
3.   

Steps

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Record the types of fingerprints from those in your group.

Name	Fingerprint 1 (Thumb)	Fingerprint 2 (index finger)

Questions:

Do people always have the same type of fingerprint on their thumb and index finger?


What was the most common type of fingerprint in your group?

Hidden fingerprints:

Aim: To learn how to lift hidden fingerprints from an object.

1. Lifting and Gathering fingerprints.

Equipment:

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6.  

Method: 

1. 
   
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6. 
   

Results:

Insert a photo of your lifted fingerprints here:

Conclusion Questions:

Did you manage to lift clear fingerprints?

What could you do to improve your results next time?

Why do you think fingerprints are useful to crime scene investigators?

MONDAY, MARCH 25, 2019

Home chemistry - Fizzy Drink

Aim: To see which is the best recipe using baking soda and citric acid for making fizzy drink bubbles.

In groups of 3 write on the hexagons and explain to the class why you chose these words.

Equipment:

1.  
2.  
3.  
4.  
5.  
6.  

Recipe:

1. 1 t baking soda
2. 1 t tartaric acid
3. 1 cup water

Steps:

1. Combine baking soda and tartaric acid into a container.

2. Mix them well together.

3. Add 1 t of the mixture to 1 cup of water

4. Stir together well

5. Count the number of bubbles.

Change the recipe around to see which recipe produces the most bubbles.

Findings:

Conclusion:

THURSDAY, MARCH 21, 2019

Home Chemistry - Mars

Mars

How to get to Mars

Aim: To design and build a Mars Rover using  Lego Technics.

1. Rover facts
2. Design and make draw Rover
3. Mars facts

Research links:
Mission to Mars - NASA
Mars rover view

Information about Rovers 5 parts

1. Rover facts

Why do we have each of the parts?

Fill in the table below.

Name:	Purpose:
Wheels
Solar Panel
Laser
Camera
Shovel, rock pick,drill

Mars Rover details:

2. Make a Mars Rover that has the following:

• 6 wheels
• 1 camera
• 1 shovel, rock pick, at the front
• 1 solar panel
• 1 laser that points at the ground

 ( Upload a photo of your mars rover onto your blog.)

3. Mars Facts

You will need to find out the following:

Fact	Earth	Mars
Picture of planet
Length of 1 year	365 days
Length of 1 day	24 hours
Distance from the sun
Distance from Earth.
Gravity:
Colour:
Temperature	-88 to 57 C
Rainfall
Atmosphere
Surface
Moons and names

Extra for experts
Draw your mars rover. Clearly label each part.

The drawing must be neat, clearly labelled, and coloured.
Upload a picture of your drawing onto your blog.

MONDAY, MARCH 18, 2019

Home Chemistry - What is that white powder?

Today you will be a forensic chemist. 

A bag of white powder has been confiscated by the airport customs.  You need to find out what white powder it is?

Aim: To learn about the makeup of different white powders.

There are  a number of different white powders in our everyday life. Some of these are harmful and others are not. Test the four white powders listed to see which one has been found at the airport.

Here are some examples of everyday kitchen white powders.

Flour, Cornflour, Sugar, Salt, Baking Soda, Baking Powder, Icing Sugar, Tartaric Acid

Citric Acid, Gluten Free flour

You will be given a small amount of 4 white powders on your cardboard. On the black cardboard using a magnifying glass look at the powders.

Look at them under your magnifying glass and record what you see. 

These are the four powders we will be using. Upload a photo of each powder. 

1.  Cornflour
2.  Baking Soda
3.  Salt
4.  Sugar 

Before you add the iodine, vinegar or water you will need to divide each powder into 3.

Materials

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Steps

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Findings:

	Sugar	Salt	Baking Soda	Cornflour
Appearance
Texture
Smell
Iodine
Water
Vinegar

Write a paragraph about your findings.

Making Sherbet

Once you have completed your blog and cleaned up all your equipment you can make sherbet.

Using the following recipe you can make sherbet.

Sherbet recipe

Recipe: 

1 tsp of powdered drink crystals (eg refresh)
1/4 tsp citric acid
1/2 tsp icing sugar
1/4 tsp -baking soda.
Put all ingredients into a zip lock bag, stir, and enjoy.

Materials:

1.  

2.  

3.  

4.  

5.  

Steps

1.
2. 
3. 
4. 
5. 
6. 

Findings:

Sherbet
Taste
Colour

Conclusion

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Home Chemistry - Forensic Science

Forensic Science 1. Write a the definition of forensic science in your own words? https://en.oxforddictionaries.com/definition/fo...

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