Method: We held a strip of magnesium metal in the hottest part of a bunsen burner flame till it caught fire. We didn't look directly at the reaction because it would of made us lose eyesight.
Observations:
1. The magnesium metal was a small, tiny, silver of metal
2. The magnesium burned with a bright white light.
3. After it burned it turned into a greyish powder.
Include a photo/video of each observation and label them.
The word equation is:
The balanced chemical equation is:
2. Iron filings reacting with sulphur:
Method: We mixed equal amounts of iron filings and sulphur then used a magnet wrapped in paper to separate them. We mixed them again and added the mixture to a test tube and heated strongly.
Observations:
1. The iron filings were grey
2. The sulphur was a yellow powder
3, When we heated the tube It turned bright red and started forming together.
4. After the reaction It turned into a greyish yellow powder.
Include a photo/video of each observation and label them.
The word equation for the reaction is:
The balanced chemical equation is:
Acids, Bases and Indicators
Aim: To investigate how indicators change colour in acids and bases.
Method:
1. Set up your spotting tile with two drops of acids in the first row of four, two drops of water in teh middle row of four and then 2 drops of base in the last row of four.
2. In the first row of three put a small piece of red litmus paper (tear your strip into three for this), in the second row put a small piece of blue litmus paper, in the third row a small piece of universal litmus paper and in the fourth a drop of universal indicator.
Conclusion:
Method:
1. Set up your spotting tile with two drops of acids in the first row of four, two drops of water in teh middle row of four and then 2 drops of base in the last row of four.
2. In the first row of three put a small piece of red litmus paper (tear your strip into three for this), in the second row put a small piece of blue litmus paper, in the third row a small piece of universal litmus paper and in the fourth a drop of universal indicator.
Conclusion:
They all starting making different colours and each of the those colours represent acids or bases.
Green and Rainbow challenges
A: Green challenge:
Take a test tube and fill with "two fingers" of the base. Now see the teacher for three drops of universal indicator. Now add the acid
Observations:
1. When we added the universal indicator to the base the colour changed to yellow.
2. When the solution was neutralised the colour changed to green.
The most difficult thing about this challenge was Trying to get green because it kept on showing up with different colours but not green which is what i wanted but eventually i got it.
Include a photo of the final green solution.
B: Rainbow challenge:
Take a test tube, the base and the acid and universal indicator and create a the best rainbow in a test tube you can manage.
Put a photo of your rainbow in a test tube here:
Take a test tube and fill with "two fingers" of the base. Now see the teacher for three drops of universal indicator. Now add the acid
Observations:
1. When we added the universal indicator to the base the colour changed to yellow.
2. When the solution was neutralised the colour changed to green.
The most difficult thing about this challenge was Trying to get green because it kept on showing up with different colours but not green which is what i wanted but eventually i got it.
Include a photo of the final green solution.
B: Rainbow challenge:
Take a test tube, the base and the acid and universal indicator and create a the best rainbow in a test tube you can manage.
Put a photo of your rainbow in a test tube here:
Making Table Salt
Aim: To make sodium chloride crystals by neutralising an acid with a base (alkali)
Method:
1. Measure 10ml of hydrochloric acid (HCl) in the small measuring cylinder and pour into a 50ml beaker.
(include photo here)
2. Add dilute sodium hydroxide (NaOH) to the acid a few drops at a time while stirring with a glass stirring rod.
(include second photo here)
3. Use the glass stirring rod to transfer a drop of the solution to a spotting tile. Add a drop of universal indicator. Is it neutral? (green)
(include third photo here)
4. Once it is neutralised (pH = 7 - green) pour the liquid into an evaporating dish and heat till it boils slowly.
(include fourth photo here)
Observations: Write one observation for each step of the method.
1. Once it was in it was a mixed colour combination
2. It took a while for the acids to
3.
4. Once it boiled it turned into salt but you can't taste it yet.
Word equation for the reaction: Sodium Chloride + water = Table Salt
Balanced symbol equation for the reaction: Sodium Chlordie + water = Table Salt
Method:
1. Measure 10ml of hydrochloric acid (HCl) in the small measuring cylinder and pour into a 50ml beaker.
(include photo here)
2. Add dilute sodium hydroxide (NaOH) to the acid a few drops at a time while stirring with a glass stirring rod.
(include second photo here)
3. Use the glass stirring rod to transfer a drop of the solution to a spotting tile. Add a drop of universal indicator. Is it neutral? (green)
(include third photo here)
4. Once it is neutralised (pH = 7 - green) pour the liquid into an evaporating dish and heat till it boils slowly.
(include fourth photo here)
Observations: Write one observation for each step of the method.
1. Once it was in it was a mixed colour combination
2. It took a while for the acids to
3.
4. Once it boiled it turned into salt but you can't taste it yet.
Word equation for the reaction: Sodium Chloride + water = Table Salt
Balanced symbol equation for the reaction: Sodium Chlordie + water = Table Salt
