The difference between naturally occuring and synthetic elements is that synthetic elements can't be found naturally - they can only be synthesised by man. Elements after no. 92 (Uranium) are all synthetic.
Yes, most actinides are synthetic elements, meaning they are not naturally found on Earth and need to be created in a laboratory through nuclear reactions. The only exception is uranium, which is the only actinide that occurs naturally in significant quantities on Earth.
Synthetic fibers are made from chemical compounds, using raw materials like petroleum or natural gas. Regenerated fibers are made from recycled materials, like cellulose from plant fibers or proteins from milk. Synthetic fibers are generally considered to be more durable and resistant to shrinking and wrinkles, while regenerated fibers are more sustainable and eco-friendly.
Natural diamonds are formed deep within the Earth over millions of years, while synthetic diamonds are created in a laboratory setting using high pressure and temperature. Natural diamonds are rare and can vary in quality, while synthetic diamonds are more consistent in quality and can be produced in larger quantities. Additionally, natural diamonds may have imperfections and inclusions, while synthetic diamonds are typically more flawless.
Fibers are natural or synthetic materials that are long and thin, while plastic is a synthetic material made from polymers that can be molded into various shapes. Fibers are commonly used in textiles, while plastic is used in a wide range of applications including packaging, construction, and consumer goods.
There are a number of synthetic elements. And a few that are what is called quasi-synthetic. The synthetic ones aren't found in nature. And it could be said that the quasi-synthetic ones are found in nature in only the barest trace amounts. The nice folks at Wikipedia have posted a comprehensive list, and a link is provided. That way you can scan the list quickly, and you will have the added advantage of being able to link to any element that looks interesting. Yes, that's right. All the elements on the list are actually hyperlinks to the Wikipedia article on that element. How cool is that?!
Yttrium is a natural element found in the Earth's crust. It is not a synthetic element.
Lithium is a natural element that is found in various minerals and salts in the Earth's crust. It is not a synthetic element.
because natural emeralds are harder than a synthetic emareld
Nylon is a synthetic material, while cotton is a natural material (resource).
Cadmium is a natural chemical element.
Boron is a naturally occurring element found in the Earth's crust. It is not a synthetic material.
Yes
Aluminium is a natural chemical element.
Synthetic emeralds and natural emeralds are chemically the same, and their crystalline structure is the same. Only their origins differ.
Natural esters are derived from natural sources such as plants and animals, while synthetic esters are man-made through chemical processes. Natural esters tend to be more environmentally friendly and biodegradable compared to synthetic esters, which may offer more consistent performance and tailored properties.
Turmeric is a natural product (from Curcuma longaplant) known as Indian saffron.
Phosphorus is an element. It's natural.