At room temperature oxygen, is present in the gas phase.
A gas is defined as a substance which is characterized by the rapidly movement of molecules which are widely separated. The shape and volume of gas is not definite that is they take on the shape of the container in which it is placed. The gas molecules have minimum inter-nuclear attractions and thus have high kinetic energy.
Thus, the sentences that describes oxygen at room temperature are:
- It has no definite volume and takes the shape of its container.
- Its particles move fast enough to overcome the attraction between them.
- It has more energy than it would be at a cooler temperature as the kinetic energy is directly proportional to the temperature that is kinetic energy increases on increasing the temperature.
Answer:
Today, the atom is defined as the smallest particle that can be considered an element.
Explanation:
Answer:
I hope I helped you
Explanation:
Robert Hooke Anton van leeuwenhoek
- He was the first to use the word cell. - He observed animacules.
- he observed cork cells. - He used polishes lens.
Answer:
ive learned about the chart , ive learned about the coolest chemicle reactions and how. the can change colors , ive also learned that chenistrey is all around us since the beginning of life ,and how liquid can turn solid
Explanation:
When an element has a different number of neutrons, it’s called an isotope.