The air you breathe is a gas which is one of the four physical states of matter.
No, not everything that can be seen fits the definition of matter. Matter refers to physical substances that occupy space and have mass. Some things that can be seen, such as light or energy, do not fit this definition.
Matter is described as anything that has mass and occupies space. There are different types of matter, such as atoms and molecules, that exhibit different properties and interactions. Due to the diversity and complexity of matter, it's challenging to provide a single, absolute definition that encompasses all forms and behaviors of matter.
The matter that can change shape and volume is gas.
This demonstrates the property of matter called "impenetrability," which means two objects cannot occupy the same space at the same time. When the bookshelf is already filled with books, there is no more physical space for additional books to fit without displacing the existing ones.
A gas is a state of matter that takes the shape of its container. Gas particles are free to move around and fill the space available to them, allowing the gas to expand or be compressed to fit the container's shape.
No, not everything that can be seen fits the definition of matter. Matter refers to physical substances that occupy space and have mass. Some things that can be seen, such as light or energy, do not fit this definition.
Matter is anything except anti-matter, and matter occupies all of everything everywhere. Basically, yes. Unless you see anti-matter, which is doubtful because the anti-matter would implode upon contact with matter, which includes air.
Yes, a brick is considered matter because it has mass and occupies space. Matter is defined as anything that has mass and takes up volume, and bricks are solid objects made from materials like clay or concrete. Therefore, they fit the definition of matter.
The definition is yours to choose as you see fit.
For a proper fit of a protective mask, you should take a Fit test. If the mask fits properly it will not allow air from the outside into the facepiece no matter the position of the head.
For breathing in polluted air, I personally recommend the N95 masks from Nirvana Being. They offer multi-layer filtration, a snug fit, and long wear comfort. Whether walking or commuting, I feel much safer and healthier with it on.
Yes, Panama fits the definition of an isthmus.
Clean, fit, and proper.
Hi
yes
"Living in water" IS the definition. You are looking for a word to fit that definition. Aquatic is probably what you are looking for.
"Good Samaritanism" or "volunteerism" fit the definition.