covalent bonds
a bond (any type of bond, but JUST the word bond!)
A compound usually consists of two or more atoms joined in a definite ratio.
a bond
The stoichiometry is governed by the laws of definite proportions and multiple proportions.
This ratio is different for each compound; for the oxide P4O10 the ratio is 2/5.
Two or more different elements that are chemically combined in a definite ratio is a compound. Based on the nature of the bonds, it can be called an ionic compound (i.e. atoms bonded together by ionic bonds) or an molecular compound (i.e. atoms bonded together by covalent bonds).
the numbers
2:1 ratio. There would be eight atoms of hydrogen and four atoms of oxygen.
By the law of definite proportions.
The stoichiometry is governed by the laws of definite proportions and multiple proportions.
Generally yes (the law of definite proportions); as exceptions - nonstoichiometric compounds.
A compound has a definite ratio of components.
A compound is the pure substance formed from the chemical combination of two or more different elements in a fixed ratio.
A molecule is a group of atoms joined together by covalent bonds. If it is a molecule of element , atoms of the same element combine in a definite number . for example: a chlorine molecule Cl2, an oxygen molecule O2, etc. If it is a molecule of a compound , atoms of two or more atoms of different elements combine in a definite ratio. for example: H2O, water, or C6H12O6, glucose. It was formerly defined as the smallest particle of a substance that can exist independently, but in modern usage it is not applied to ionic compounds such as calcium oxide, which are giant assemblies of ions.
A simple definition is: a chemical compond has the elemental components in a fixed ratio.
This ratio is 2/5.
This ratio is different for each compound; for the oxide P4O10 the ratio is 2/5.
No. The reason depends on the metal. If it is a single metal element then there is only one component, and thus nothing to compare it with in a ratio. If it is an alloy then there are multiple components, but not in a definite ratio.
The chemical formula of potassium nitride is K3N. The ratio potassium atoms/nitrogen atoms is 3.
Two or more different elements that are chemically combined in a definite ratio is a compound. Based on the nature of the bonds, it can be called an ionic compound (i.e. atoms bonded together by ionic bonds) or an molecular compound (i.e. atoms bonded together by covalent bonds).