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An element
Atom of carbon?
compounds CAN be decomposed elements CANTThe answer would be Mercury because it is an element and can't be broken down by chemical means. but methane, ethanol and ammonia can be broken down by physical means because they are compounds.
In an ordinary chemical reaction, the mass of the products is equal to the mass of the reactants. Matter is conserved.
an element is a substance that cannot be broken down into a simpler form by chemical means
This particle is the atom.
An element
Atom of carbon?
This is called molecule.
Oxygen O2
The types of chemical combinations are as follows: 1. Electrovalent (or ionic) combination 2. Covalent combination, which is classified into (a) Ordinary covalent combination, (b) Coordinate covalent combination
compounds CAN be decomposed elements CANTThe answer would be Mercury because it is an element and can't be broken down by chemical means. but methane, ethanol and ammonia can be broken down by physical means because they are compounds.
The meaning of elements is any of the fundamental substances that consist of atoms of only one kind and that singly or in combination constitute all matter.
Elements
In an ordinary chemical reaction, the mass of the products is equal to the mass of the reactants. Matter is conserved.
The chemical name for ordinary table salt is sodium chloride.
Magnesium nitrate is an ordinary chemical, which can be obtained from a chemical supply company.