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Anit [1.1K]
3 years ago
8

Even if you don't touch a marshmallow to a campfire flame, holding a marshmallow near a flame causes it to toast and turn brown.

Why does this happen?
Hot air in the atmosphere cooks the marshmallow.

Heat radiates from the fire and cooks the marshmallow.

Smoke and soot from the fire cause the marshmallow to brown.

Dust blowing through the air causes the marshmallow to brown.
Chemistry
2 answers:
Olin [163]3 years ago
6 0
Heat radiates from the fire and cooks the marshmallow because heat transfer.
Sedbober [7]3 years ago
4 0

The correct answer is B. Heat radiates from the fire and cooks the marshmallow.

Explanation:

Fire occurs as one material such as wood burns or oxidates (atoms of the material change), and this releases heat, and light. In the case of the heat emitted by fire, this goes beyond the visible flames, considering due to the process of oxidation a lot of energy is produced as heat. Additionally, this heat is transferred to nearby objects.

Due to this, just by being near to fire you can feel the heat emitted even without having contact with flames. This implies, in the case of a marshmallow that toasts and turns brown if you hold it near to a flame, this occurs because the heat radiates from the fire due to oxidation or combustion and this cooks the marshmallow changing the way it looks and tastes.

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3 years ago
Match the following words.
azamat

Answer:

1. active site

2. substrate.

3. activity

4. cofactor

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6. coenzyme.

Explanation:

1. A substrate binds to an enzyme at the active site where the reaction occurs.

2. In a catalyzed reaction, a reactant is often called a  substrate.

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3 years ago
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Explanation:

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3 0
4 years ago
The reaction in which hydrogen and oxygen are produced by running an electric current through water is an example of
Ainat [17]
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 Decomposition  of   water through  electrolysis  of  water  into   oxygen  and hydrogen   gas  due  an electric  current  passed  through   water.   when an  electric  current  is passed through  water, oxygen   gas is being  produced  at  the anode  and  hydrogen  gas  is produced  at the  cathode.
4 0
3 years ago
Read 2 more answers
Which of the following is true: A. Gamma rays are too dangerous to be used in a medicinal way. B. Gamma radiation is used common
ratelena [41]

Answer:

D

Explanation:

Gamma radiation penetrates the cell wall of prokaryotic organisms such as bacteria and can inhibit their metabolic functions as well as destroy their DNA.

Debunking the other answers:

A is incorrect as Gamma radiation is used in the treatment of cancer via radiotherapy.

B is incorrect as Gamma rays are too small and would just penetrate any smoke particles.

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Thus, D is correct.

6 0
2 years ago
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