This geological process created complex molecules of hydrogen and carbon. Oil can also contain other elements. Crude oil, or unprocessed petroleum, is called sour when it contains a lot of sulfur, an impurity. Sour crude requires more refining than sweet crude, which is often more valuable. Ite...
All elements except metals form covalent bonds. Part of what makes a metal what it is is its propensity to lose the electrons in its outer shell and become an ion, which is a charged particle. Ions prefer to coalesce into solid lattice structures. Covalent molecules, on the other hand, mo...
Salt water consists of water (H₂O) and salt (NaCl). There are four different elements present, but they are not all combined chemically. The water molecules and salt molecules exist together but aren’t chemically combined. Therefore, salt water is not a compound. Instead, saltwater is co...
This is a label that gets used to specifically denote when a molecule is composed of at least two different elements. Methane, for example, is a greenhouse gas that has received a great deal of attention in recent years. Methane has the chemical formula CH4, and consists of one carbon atom...
Proportionsbrought atoms and molecules into the field of hard science. The former proposed that elements are basic substances that cannot be broken down further while the latter proposed that each element consists of a single, unique type, of atom and that these can join together to form ...
What aspects of DNA's structure contribute to the stability of the DNA molecule? DNA: DNA is an organic biomolecule that is acidic by nature. It has a nucleotide sequence that determines the structure and functions of an organism. It is coiled to form chromosomes. Answer and...
What sort of elements are involved in metallic bonding? What is the element AR classified as in the periodic table? What is iron's state of matter at room temperature? How many iron atoms are present in 0.552 mol of iron? What are the heavy metals on the periodic table?
Valence electrons = outermost electrons Of the seven diatomic molecules, which one contains a double bond? A triple bond? Write the Lewis structure for N2 What type of elements have atoms arranged in crystal structure? Which groups on the periodic table would form ions with the following charge...
What is the name of the molecule shown? What type of atoms form covalent bonds? What bond is formed when electrons are shared between atoms? Which substance is a combination of different atoms? What is the difference between elements, molecules, and atoms? How many atoms are required to form...
The xylem is made up of a few different cell types including: tracheid, vessel elements, parenchyma, and fibers. The transport that takes place in the xylem is passive and does not require energy to be expended. Instead, the movement of sap in the xylem is attributed to three different...