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Chapter 1: Q13 E (page 55)

How do molecules of elements and molecules of compounds differ? In what ways are they similar?

Short Answer

Expert verified

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. The molecule of element consists of only one kind of atoms but the molecules of an compound in made up of two or more kind of atoms.

Similarity between a molecule of a compound and a molecule of an element is that both of them are made up of atoms and have bonds linking their atoms together.

Step by step solution

01

Describing the differences between molecules of the element and molecules of the compound

  • The molecules of the elements haveidentical or homogeneous atoms while the molecules of the compounds have two or moredissimilar or heterogeneous atoms.
  • The polarity of the molecules of the elements is zero within the molecule because of the identical atoms while it will not be the same in the molecules of compounds.
  • The size of the atoms in the molecules of theelements is the same whereas in the molecules of the compounds is different.
02

Describing the similarities between molecules of the element and molecules of the compound

  • The atoms within the molecules of the element and molecules of the compounds are connected by the chemical bond such asionic, covalent, or coordinate bonds.
  • They cannot be separated by using any physical process.
  • They are physically found in three states such asliquid, solid, and gas.

Ex., Oxygen (O2), fluorine (F2), and sulfur (S8) are the molecules of the elements, and water (H2O) and carbon dioxide (CO2) are the molecules of the compounds.

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Most popular questions from this chapter

Identify each of the following statements as being most similar to a hypothesis, a law, or a theory. Explain your reasoning.

(a) Falling barometric pressure precedes the onset of bad weather.

(b) All life on earth has evolved from a common, primitive organism through the process of natural selection.

(c) My truck鈥檚 gas mileage has dropped significantly, probably because it鈥檚 due for a tune-up

Calculate these volumes.(a) What is the volume of 11.3gmgraphite, density2.25g/cm3?

(b) What is the volume of 39.657gm bromine, density 2.928g/cm3?

Check Your Learning (a) To three decimal places, what is the volume of a cube \(\left( {c{m^2}{\rm{ }}} \right)\) with an edge length of \(0.843{\rm{ }}cm\)? (b) If the cube in part (a) is copper and has a mass of \(5.34{\rm{ }}g,\) what is the density of copper to two decimal places

Both graphite and diamond burn.

\({\bf{C}}\left( {{\bf{s, diamond}}} \right){\bf{ + }}{{\bf{O}}_{\bf{2}}}\left( {\bf{g}} \right) \to {\bf{C}}{{\bf{O}}_{\bf{2}}}\left( {\bf{g}} \right)\)

For the conversion of graphite to diamond:

\({\bf{C}}\left( {{\bf{s, graphite}}} \right) \to {\bf{C}}\left( {{\bf{s, diamond}}} \right){\bf{ \Delta {\rm H}}}_{{\bf{298}}}^{\bf{^\circ }}{\bf{ = 1}}{\bf{.90 kJ}}\)

Which produces more heat, the combustion of graphite or the combustion of a diamond?

Matter is everywhere around us. Make a list by name of fifteen different kinds of matter that you encounter every day. Your list should include (and label at least one example of each) the following: a solid, a liquid, a gas, an element, a compound, a homogenous mixture, a heterogeneous mixture, and a pure substance.
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