Teacher : good morning!!
Students : good morning mom.
Teacher : okay we will start our lesson. today is we will discuss about oxygen. Nah no one knows what is oxygen?
Rara : I mom, according to the book I read oxygen is a chemical element in a periode table system that has the symbol O and atomic number 8.
Mita : bu oxygen is a class of kalogen elements and can easily react with almost any other element.
Teacher : now the answer from your friends was correct. So oxygen is a chemical element present in this oxygenic periodic table usually in symbols with O and having an atomic number of 8 oxygen is also a cholesterol class element and can easily react with almost any element. Well from the explanation of what you already know what is oxygen.
Student : already bu (answered in unison)
Teacher: now there is a lot of air pollution, who can give an example of air pollution?
Maria : I mom contamination of land because of the amount of garbage piled that is difficult to describe. Pollution of vehicle fumes and factories.
Teacher : is it good that all have understood?
Student : already mom.
Teacher : okay till here our meeting today we continue next week do not forget to learn more about oxygen because tomorrow we will discuss again.
In your dialogue, there is the word "pollution of vehicle fumes and factories", is pollution a chemical compound? What is that compound?
BalasHapusThe sources of the causes of air pollution are numerous, some of which are naturally such as the eruption of Mount Merapi and are present due to human activities such as motor vehicle fumes, cigarette smoke, garbage burning fumes and activities in the chemical industry.
HapusAir pollution can be categorized into 2 ie primary and secondary. Primers are air pollution from sources such as carbon monoxide whereas secondary pollution is air pollution that occurs due to the reaction between primary pollution such as depletion of ozone in the stratosphere.
Types of harmful air pollutants include carbon monoxide, sulfur dioxide, Pb gas, sulfur trioxide, carbon dioxide, CFC, nitrogen oxides and others.
why only oxygen we breathe when there is hydrogen and other gases?
BalasHapusThe air we breathe everyday during our life in this world is not pure oxygen. When breathing, our bodies take the air from the outdoors to be used for various purposes of the body. The air entering the body contains various gases such as oxygen, carbon dioxide, argon, nitrogen, and water vapor. But there is a possibility that there are other gas deposited in the air inhaled by humans.
HapusThe free air used by humans to breathe contains nitrogen gas of 78%, contains 20% oxygen gas, contains argon gas of less than 1%, contains about 1% moisture and compares carbon dioxide by less than 0.1% . The gases are well mixed in the air in the world. If we look at the percentage then people actually breathe by inhaling nitrogen, because most of the gas the human inhales while breathing is nitrogen gas.
What will happen if the oxygen content in the atmosphere increases 1% ??? please explain along with the impact !!
BalasHapusIf the oxygen content increases 1% then in the atmosphere there is a change in temperature is happenedya increase in temperature
HapusWhy oxygen easily react with other elements?
BalasHapusBecause oxygen trdri of 1 element only is O2
HapusHow to deal with students who mostly do not understand chemistry lessons?
BalasHapus