Question

Difference between molecules of elements and molecules of compounds

Answer 1

The only difference between a molecule of a compound and a molecule of an element is that in a molecule of an element, all the atoms are the same. For example, in a molecule of water (a compound), there is one oxygen atom and two hydrogen atoms. But in a molecule of oxygen (an element), both of the atoms are oxygen. 

For your second question, you can look at it like solving a puzzle. Hydrogen can make only one bond to one other atom. Carbon makes four bonds. So if you're looking at a molecule of hydrogen, with two hydrogen atoms, you know that each one will make one bond and that bond will be in between them (H-H). The propane example is a bit more complicated, but I think you can figure it out if you remember that hydrogen makes only one bond and carbon makes fou

Answer 2

Answer:

Elements are substances that always consist of only one type of atoms which cannot be divided in to two or more atoms, whereas compounds can be formed with two or more different elements (in a fixed proportion) are joined by chemical bonds.

Explanation:

• Elements: H, O, C (element with one type of atom); H2, C6, O2 (element with two type of atom)
• Compounds can be broken in to the purest form of elements using chemical method by breaking the chemical bond between elements. When there is one or more type of molecules bonded together, the prefix like mono, di, tri etc., can be included at the beginning of the element based on the number of atoms present in it.
• Compounds: CO2 (combination of two different atoms- carbon di oxide)

Learn more:

1) Classify the following into elements and compounds- h2o , he,cl2,CO,Co:

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2) What is an element what are the different types of elements:

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