chemistry essay

 chemistry composition

QUEST0ION 1 - INSTANCES OF DIFFERENT SELF-HEATING FOOD AND DRINK YOU COULD BUY:

ORIGIN 1: http://www.hotboxfood.co.uk/content/11-drinks-soups

DATE UTILIZED: 04/02/14

Hotbox Food wish to present a line of scrumptious beverages in completely self-heating cans. Due to these progressive containers known as " Hotshots", it is now likely to drink high quality beverages anytime and at any place. Neither an external heat origin, nor some other cooking products are required. Drinks 2go recipes do not include additives, preservatives, artificial colours or any recycleables obtained from GMO (Genetically Modified Organisms).

Now you can enjoy a Hot Drink or maybe a Hot Container of Soup in 3 Minutes wherever you may be. These products are great for the Recreational camper, the Rambler, the Angler, the Sales Person who does not want to get caught short when ever stuck for the Motorway or indeed anyone who likes the convenience that our Hotshots Drinks and Soups offer.

SOURCE two: http://evaq8.co.uk/Self-Heating-Food.html

TIME ACCESSED: 04/02/14

Self-Heating Food in a Handbag All Day Breakfast

Self-Heating Meal in a Bag Coffee beans & Potato

Self-Heating Meal within a Bag Chicken & Potato Curry

Self-Heating Food in a Carrier Chicken Curry With Grain

Self-Heating Meal in a Bag Meatballs with Nudeln

Self-Heating Meal in a Bag Thailander Green Chicken Curry

Self-Heating Meal in a Carrier Thai Green Vegetable Curry

Self-Heating Hot Beverage Black Caffeine

Self-Heating Hot Drink Cappuccino

Hot Can Self Heating Meal Dairy products Ravioli Vegan

HotCan Self Heat Meal Meatballs With Coffee beans

HotCan Self Warming Meal Tortellini Bolognaise

SOURCE a few: http://evaq8.co.uk/Self-Heating-Food.html

PROBLEM 2 - WHAT CHEMICALS ARE USED TO WARM UP FOOD AND DRINK DURING THESE CANS?:

Warmth is produced inside the Hot-Can from the combining of Calcium supplements Oxide (quicklime, CaO) with Hydrogen Dioxide (water, H2O) which produces Calcium Hydroxide (Ca(OH)2)

The formula just for this exothermic reaction is:

CaO + WATER > Ca(OH)2 + Temperature

Once the heating system reaction is definitely complete, the Calcium Hydroxide (Ca(OH)2) reacts readily with Carbon Dioxide (CO2 ) in the air to form Calcium supplements Carbonate (limestone, Ca CO3) and earnings to it is original condition

The solution for this response is:

Ca(OH)2 + LASER > California CO3 + H2O

he reactions will be essentially CARBON DIOXIDE neutral: Carbon (CO2) is usually released in producing the Calcium supplement Oxide (quicklime, CaO ) by heating system Calcium Carbonate (limestone, California CO3) to extremely high temperatures, and is subsequently reabsorbed during the reaction.

The particular it heat?

Hot-Can has evolved a special double chambered aluminum can which contains the drink in the outer chamber and holds normal water and calcium supplement oxide (quick lime) independently in the internal chamber. If the button at the end of the can is pressed, the water mixes with the quicklime, starting an exothermic reaction that heats the contents of the outer holding chamber in less the 3 minutes by 50-55В°C to give you a piping warm drink.

SOURCE 4: http://www.hot-can.com/Australia/howto.html

QUESTION a few - WHAT KIND OF REACTION TAKES PLACE BETWEEN THESE KINDS OF CHEMICALS?

EXOTHERMIC REACTIONS

If a chemical reaction occurs, energy is usually transferred to or from the environment - and often a temperature change.

Exothermic reactions transfer energy to the surroundings. The vitality is usually transmitted as warmth energy, leading to the reaction blend and its natural environment to become warmer. The temperatures increase could be detected by using a thermometer.

Origin 7: http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa/exothermic/exothermic_endothermicrev1.shtml

During a reaction:

Bonds inside the reactants are broken

New bonds are made in the goods

Energy can be absorbed in order to bonds. Bond-breaking is an endothermic process.

Energy can be released when new a genuine form. Bond-making is an exothermicprocess.

Whether a reaction is endothermic or exothermic depend upon which...

Bibliography::

SOURCE 1: http://www.hotboxfood.co.uk/content/11-drinks-soups

SOURCE 2: http://evaq8.co.uk/Self-Heating-Food.html

RESOURCE 3: http://evaq8.co.uk/Self-Heating-Food.html

SOURCE 5: http://www.hot-can.com/Australia/howto.html

Origin 5: http://www.gizmag.com/hot-can-self-heating-beverages/25646/

Source six: http://en.wikipedia.org/wiki/Self-heating_food_packaging#Heating_methods

Origin 7: http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa/exothermic/exothermic_endothermicrev1.shtml

Source eight: http://www.bbc.co.uk/schools/gcsebitesize/science/add_edexcel/chemical_reactions/energychangesrev2.shtml

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