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What Henry priestly discovered?
Henry Priestley discovered oxygen in 1774 while conducting experiments with a substance known as mercuric oxide. This discovery laid the foundation for the understanding of the role of oxygen in combustion and respiration.
Rust on an artifact is an example of?
oxidation. Rust is a chemical reaction that occurs when iron or steel comes into contact with oxygen and moisture, leading to the formation of iron oxide. This process weakens the affected material over time.
Which elements tend to share electrons in chemical bonds?
Nonmetals typically share electrons in chemical bonds in order to achieve a stable octet configuration in their outermost energy level. This sharing of electrons allows both atoms involved in the bond to reach a more stable, lower energy state. Examples of elements that commonly share electrons in bonds include oxygen, nitrogen, and carbon.
Why are you advised not to leave too many potted plants in the bedroom at night?
Having too many potted plants in the bedroom at night can reduce the oxygen levels as plants undergo respiration during the night, which may affect sleep quality. Additionally, some plants release carbon dioxide instead of oxygen during the night, making it important to balance the number of plants in the bedroom to maintain a healthy environment for sleeping.
Archaebacteria that live in oxygen-free environments include?
Methanogens, which are a type of archaebacteria, thrive in oxygen-free environments such as wetlands, swamps, and the digestive tracts of animals. They produce methane gas as a byproduct of their metabolic processes. Another example is halophiles, which live in extremely salty environments like salt flats and salt mines.
The chemical combination of a substance with oxygen is?
An oxide.
When oxygen is liquefied is it a physical or chemical change?
Physical because it is still Oxygen. A chemical change results in a chemical equation and thus a new substance. No new substance = no chemical change. Liquefaction is a physical property.
Is oxidizing a physical or chemical change?
Oxidizing is a chemical change, as it involves a substance reacting with oxygen to form new compounds with different properties. In contrast, physical changes do not alter the chemical composition of a substance.
Is flammability of a substance is physical or chemical change?
Stating that something is flammable is stating a chemical property. But the actual burning would be a chemical change.
Is oxygen a chemical change or a physical?
Oxygen is a chemical element, so its presence does not involve a chemical change. It undergoes physical changes such as changes in state (gas to liquid) based on temperature and pressure.
Is hydrogen and oxygen combing into water a chemical change?
Yes, the combination of hydrogen and oxygen to form water is a chemical change. In this reaction, new bonds are formed and energy is released, resulting in a new substance with different properties than the original elements.
Is forming ozone from oxygen a chemical change?
Putting oxygen in tanks (under pressure) is a physical change, not a chemical change. The chemical nature of the oxygen has not been altered, and it is possible to recover the original substance, thus it is not a chemical change.
What element is that is necessary for a substance to burn?
Oxygen is necessary for a substance to burn. It reacts with the substance in a chemical reaction known as combustion, releasing heat and light energy. Without oxygen, the substance will not be able to sustain a fire.
What is a chemical change in which a substance combines with oxygen as when iron rust forms called?
The chemical change in which a substance combines with oxygen, such as the formation of iron rust, is called oxidation. This process occurs when iron reacts with oxygen in the presence of moisture to form iron oxide, which is the red-brown substance known as rust.
Is combustion a physical change?
NO its a chemical change for it can't be reversed
What is a chemical change in oxygen?
A chemical change in oxygen occurs when it reacts with another substance to form new compounds. For example, when oxygen reacts with iron, it forms iron oxide (rust), which is a different chemical compound than oxygen. This process involves breaking and forming chemical bonds.
Is a carbon atom combines with two oxygen atoms to form carbon dioxide a physical change?
No, the combination of a carbon atom with two oxygen atoms to form carbon dioxide is a chemical change because the atoms are rearranging to form a new substance with different properties.
