how do the properties of compounds often compare with the properties of the elements that make them?

They may be very different. Rust does not look or behave much like iron and oxygen. Table salt is nothing like Chlorine or Sodium.

what does the statement''the properties of salts are different from the properties of the elements that go into making them''mean?use an example

To compare the properties of compounds with the properties of the elements that make them, you need to consider a few factors:

1. Atomic properties: Elements are substances made up of a single type of atom, each with its own specific properties. Compounds, on the other hand, are formed when different atoms chemically combine. Therefore, the properties of compounds can be quite different from those of their constituent elements.

2. Bonding: Atoms in compounds are held together by chemical bonds, which can be covalent (shared electron pairs) or ionic (transfer of electrons). Different types of bonding lead to different properties. For example, compounds with covalent bonds tend to have lower melting and boiling points compared to compounds with ionic bonds.

3. Structure: The arrangement of atoms in a compound affects its properties. For instance, the structure of a compound can determine its solubility, reactivity, and conductivity.

4. Interactions: The interactions between atoms within a compound also play a role. These interactions can be influenced by factors such as electronegativity, polarity, and the presence of functional groups. These factors contribute to the overall properties of the compound.

To conclude, the properties of compounds often differ from the properties of the elements that make them due to variations in atomic properties, bonding, structure, and interactions. It is important to evaluate these factors to understand how the properties of a compound relate to its constituent elements.