Question

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Black Snake Experiment
Demonstrating chemical change
You will need:
• sugar 400
sand
safety goggles
baking soda 100 - hghter or matches gloves
• alcohol
- dish (big)
Before starting the experiment put the goggles and gloves on
Procedure:
1 Put the sand on the dish and push a
depression in the center
2 Mix the sugar and baking soda
3 Pour the mixture in the depression
4 Darpen the mixture and sand with
the alcohol
5 Light the alcohol on fire and watch
the results
6 The fire will go out on its own if you let the reaction finish, but you can
put it out by using water or covering it with sand.
Conclusion: The exothermic source causes a chemical change Sodium
bicarbonate (balang soda) breaks down into sodium carbonate water vapor
and carbon dioxide, the carbon dioxide gas pushes the carbonate from the
burning sugar out, and the carbonate snake is created
1. What is the purpose of the experiment2
a), to show how fireworks b) to show how some subtances react to fire
2. In the list of ingredients or materials,
are for personal
protection
a) lighter or matches b). safety goggles and gloves
3.
a), sand and alcohol
react to the heat.
b), baking soda and sugar
4. Which step is first?
a). Put the goggles and gloves on
b). put the sand on the dish and push a depression in the center​

Answer 1

Respuesta:

perdón pero no se inglés amigo