An element is such as oxygen, or nitrogen etc.,
A compound is a chemical combination between atoms of different elements, e.g. water (H2O) is a compound, because it contains two different elements.
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An element is a pure substance made of only one type of atom, such as oxygen or hydrogen. A compound is a substance made of two or more elements chemically combined in a fixed ratio, like water (H2O) or table salt (NaCl).
Heat is not an element, compound, or mixture. It is a form of energy that can be transferred between objects.
An example of a covalent compound formed between an element in period 2 and a halogen is hydrogen fluoride (HF). This compound is formed by the sharing of electrons between the hydrogen atom (period 1) and the fluorine atom (halogen).
To calculate the grams of an element in a compound, you need to find the molar mass of the element and the compound. Then, use the formula: (mass of element/molar mass of compound) x molar mass of element. This will give you the grams of the element in the compound.
No such thing as a 'Compound element'. It is either a 'Compound' or an 'Element. Germanium is an element that appears in the Periodic Table as 'Ge'. NB A compound is a COMBINATION of two or more different elements.
Plastic is a mixture of different compounds, additives, and polymers that are combined to give it its properties. It is not a single compound or element, but rather a complex mixture of several substances.