Wood is primarily composed of carbon, hydrogen, and oxygen atoms. These atoms are found in the molecules that make up the cellulose, hemicellulose, and lignin that form the structure of wood. Additionally, small amounts of other elements such as nitrogen, sulfur, and trace minerals may also be present in wood. **

Oxygen atoms are the building blocks of the element oxygen, which is essential for life and makes up a large portion of the Earth's atmosphere. Oxygen atoms have 8 protons and typically 8 neutrons, giving them a total atomic mass of 16. They are known for their ability to form strong bonds with other elements, making them crucial for the formation of molecules such as water and carbon dioxide. Carbon atoms are the building blocks of the element carbon, which is a fundamental component of all known life on Earth. Carbon atoms have 6 protons and typically 6 neutrons, giving them a total atomic mass of 12. They are known for their ability to form long chains and complex structures, making them essential for the formation of organic molecules such as proteins, carbohydrates, and DNA. **

Some atoms are larger than others because they have more protons, neutrons, and electrons, which increases their atomic mass and size. The number of electron shells and the distance of the outermost electrons from the nucleus also contribute to the size of an atom. Additionally, the arrangement of electrons in the electron shells can affect the size of an atom. Overall, the size of an atom is determined by a combination of its atomic number, electron configuration, and atomic mass. **

No, adding protons to atoms will not create different atoms. The number of protons in an atom determines its identity as a specific element. Adding protons to an atom will change its identity and create a different element. However, adding protons to an atom can create a different isotope of the same element, which will have a different atomic mass but the same chemical properties. **

Yes, we are made up of atoms. Atoms are the basic building blocks of matter, and they combine to form molecules, which in turn make up the cells and tissues of our bodies. Each atom is made up of a nucleus containing protons and neutrons, surrounded by a cloud of electrons. These atoms come together to form the complex structures that make up living organisms, including humans. Therefore, we can say that we are indeed made up of atoms. **

No, argon atoms do not form when chlorine atoms gain electrons. When chlorine atoms gain an electron, they become chloride ions with a negative charge. Argon is a noble gas and already has a full outer electron shell, so it does not need to gain or lose electrons to achieve stability. **

Atoms themselves cannot explode, as they are the building blocks of matter and are stable in their natural state. However, when atoms undergo a nuclear reaction, such as nuclear fission or fusion, a large amount of energy is released in the form of an explosion. This is what happens in nuclear bombs or nuclear power plants. So, while atoms themselves cannot explode, the reactions they undergo can result in explosive energy release. **

No, atoms are not universes. Atoms are the basic building blocks of matter, consisting of a nucleus of protons and neutrons surrounded by a cloud of electrons. Universes, on the other hand, are vast and complex systems that contain galaxies, stars, planets, and other celestial bodies. While both atoms and universes are part of the natural world, they exist at vastly different scales and levels of complexity. **