Flammability is a material's ability to burn in the presence of a. hydrogen b. nitrogen c. oxygen d. carbon dioxide

Oxygen.

Chemical properties can be observed only when the substance changes into one or more different substances through chemical reactions or transformations. One of the chemical properties is flammability.

Flammability is a material's ability to burn in the presence of oxygen.

Remember, oxygen doesn't burn. Precisely flammable substances obtain substances that burn. Oxygen remains an oxidizing agent, which means it supports the combustion process. Oxygen causes other objects to catch fire at low temperatures and burns hotter and faster. But oxygen itself does not burn. Consequently, if you at present deliver fuel and fire, adding oxygen will provide the fire.

Carbon dioxide is the result of combustion. An example can be seen in firewood in a fireplace. One of the chemical properties of carbon-based wood is having the ability to burn. Chemically the wood turns into carbon dioxide when it burns and leaves a residue of ash. Furthermore, this ash residue cannot be turned back into the wood. Chemical changes result in new substances.

Consider an example of a combustion reaction to methane gas:

Our balanced equation for methane combustion implies that every one CH₄ molecule reacts with two O₂ molecules. The product of combustion is one carbon dioxide molecule and two steam or water vapor molecules.

Keywords: flammability, a material's ability to burn in the presence of oxygen, hydrogen, nitrogen, carbon dioxide, chemical properties, reactions,  the combustion process, oxidizing agent, the result

Flammability is a material's ability to burn in the presence of

Further Explanation:

Flammability of a substance can be defined as the property of substance which is a measure of its ability to burn. Most of the substance comes under the category of burning when a certain condition is fulfilled. The condition which needs to fulfill for burning the substance is presence of oxygen.

The process of burning in presence of oxygen is also known as combustion.

Combustion reaction is the reaction in which the reactant reacts with molecular oxygen to form carbon dioxide and water molecule. Molecular oxygen acts as the oxidizing agent in these reactions. The large amount of heat is released and therefore combustion reactions are exothermic reaction.

The example for a combustion reaction is burning of candle in presence of oxygen. We observe that when we light a candle and then put an inverted glass over the candle, the flame of the candle gets extinguished when all the oxygen trapped in the glass is used up.

Therefore, oxygen gas needs to present in order to measure the flammability of materials. Hence, the correct option is (b).

Learn more:

1. Molecular shape around the central atom in the amino acid glycine: link

2. Identification of all of the phases of the reaction: link

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Chemical reaction and equations.

Keywords: flammability, burn, hydrogen, nitrogen, carbon dioxide, reactions, combustion reaction, oxygen, the result, material's ability, presence of oxygen.

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.

i think the answer is terrae but not 100 percent sure. ▓▬▬ §