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What accounts for the observed differences in the properties of ionic and molecular compounds?
t Answer Well firstly, ionic compounds form from metals bonding with non metals. Molecular/covalent form from non metals bonding with non metals. A strong electrostatic force between ionic compounds results in them having high melting points. A weaker electrostatic force between molecular compounds results in them having lower melting points and thus weaker bonds. Ionic compounds are made up of ions, so will conduct electricity. Covalent compounds only share electrons and so are not ions, and will not conduct electricity.
What are the characteristic of most ionic compounds?
High boiling/melting points. Very hard. They can conduct electricity when molten or dissolved. EXPLANATION: High boiling/melting points - they form lattices held together by electrostatic forces of attraction which stretches not only to the atom they reacted with but to all the ions in the lattice, which makes it hard to break. Very hard - lattice is a regular structure. Also see above. They can conduct electricity when molten or dissolved - the ions are positively and negatively charged but stuck in fixed positions when a solid. When molten or dissolved, the ions are free to move around and therefore carry the charge so conduct electricity.
When are ionic compounds at melting point?
Ionic compounds typically have high melting points because the electrostatic forces holding the ions together are strong, requiring a lot of energy to break the bonds. As a result, ionic compounds usually melt at high temperatures, often above 500°C.
How do the properties of metals differ from those of both ionic and molecular compounds?
Metals share properties such as: malleability, conductivity, strength and hardness. The reason properties of metals are different is because of metallic bonding. metals are made up of positively charged metal ions in a sea of delocalised electrons. This gives them the properties listed above. Ionic and molecular compounds are bonded in different ways. e.d ionic compounds are bonded in a rigid structure so it is brittle and non conductive
How can you use boiling points and melting points to determine a solid liquid or gas that an element would be in at a certain temperature?
If the temperature is below the melting point then the element is a solid.If the temperature is above the melting point but below the boiling point, then the element is a liquid.If the temperature is above the boiling point, then the element is a gas.
What accounts for the observed differences in the properties of ionic and molecular compounds?
t Answer Well firstly, ionic compounds form from metals bonding with non metals. Molecular/covalent form from non metals bonding with non metals. A strong electrostatic force between ionic compounds results in them having high melting points. A weaker electrostatic force between molecular compounds results in them having lower melting points and thus weaker bonds. Ionic compounds are made up of ions, so will conduct electricity. Covalent compounds only share electrons and so are not ions, and will not conduct electricity.
What are the characteristic of most ionic compounds?
High boiling/melting points. Very hard. They can conduct electricity when molten or dissolved. EXPLANATION: High boiling/melting points - they form lattices held together by electrostatic forces of attraction which stretches not only to the atom they reacted with but to all the ions in the lattice, which makes it hard to break. Very hard - lattice is a regular structure. Also see above. They can conduct electricity when molten or dissolved - the ions are positively and negatively charged but stuck in fixed positions when a solid. When molten or dissolved, the ions are free to move around and therefore carry the charge so conduct electricity.
When are ionic compounds at melting point?
Ionic compounds typically have high melting points because the electrostatic forces holding the ions together are strong, requiring a lot of energy to break the bonds. As a result, ionic compounds usually melt at high temperatures, often above 500°C.
How do you determine the type of compound ionic or molecular from the melting point such as 1240 degrees C?
If the melting point is at 1240 degrees C then it is most likely an ionic compound, because ionic compounds have their melting points above 800 degrees C while the molecular compounds have their melting point at or below room temperature.
How do the properties of metals differ from those of both ionic and molecular compounds?
Metals share properties such as: malleability, conductivity, strength and hardness. The reason properties of metals are different is because of metallic bonding. metals are made up of positively charged metal ions in a sea of delocalised electrons. This gives them the properties listed above. Ionic and molecular compounds are bonded in different ways. e.d ionic compounds are bonded in a rigid structure so it is brittle and non conductive
How can you use boiling points and melting points to determine a solid liquid or gas that an element would be in at a certain temperature?
If the temperature is below the melting point then the element is a solid.If the temperature is above the melting point but below the boiling point, then the element is a liquid.If the temperature is above the boiling point, then the element is a gas.
When are IONIC compounds are formed?
Ionic compounds are formed when atoms transfer electrons to achieve a full outer shell, resulting in the formation of positively charged cations and negatively charged anions. These oppositely charged ions are attracted to each other by electrostatic forces, leading to the creation of an ionic bond in the compound.
Can ionic substances have high or low melting points?
All ionic compounds form crystals. So far as I know, there are no exceptions to this. Again, salts like to form crystals because when you have a whole bunch of little electrical positive and negative charges all stuck together, they seem to like to bunch into little stacking groups. The arrangement that these ions like to stack into is different, and is referred to as the "unit cell". There are ten or so different general shapes of unit cells. When you get to graduate school, ask me about them. For high school classes, it's really not all that important. Ionic compounds tend to have high melting and boiling points. When I say "high", what I mean is "very, very high." Most of the time, when you work with ionic compounds in a chemistry class, the melting point is hot enough that you can't melt them with a Bunsen burner. So, why are these temperatures so high? Well, it has to do with the way that ionic materials are held together. Remember how we said above that ionic compounds form crystals? These crystals are basically just great big blocks of positive and negative charges all stuck together. To break the positive and negative charges apart, it takes a huge amount of energy. This means that if we heat up the compound to add energy, it takes a huge amount of energy to break it apart.
How is evaporation different from boiling?
as the evaporation occurs under the atmospheric pressure that is492degr and the boiling point occurs above the atmospheric pressure different liquids have different boiling points just the boiling point of water is 100deg c
What do boiling point and melting point have to do with the phase of matter of an element at room temperature?
The state of matter of a substance at room temperature depends on whether the melting and boiling points are above or below room temperature. At room temperature:A substance is solid if both the melting and boiling points are above room temperature.A substance is liquid if the melting point is below room temperature but the boiling point is above room temperature.A substance is a gas if both the melting point and boiling point are below room temperature.
IS CaO a ionic compound or a covalent molecule?
CaO is an ionic compound because it is composed of a metal (Ca) and a nonmetal (O). Ionic compounds typically form between a metal and a nonmetal by transferring electrons to achieve a stable electron configuration.
The difference between ionic compounds and covalent compounds?
An ionic bond is when one or more electrons are transfered from one atom to another. A covalent bond is when atoms share one or more electrons. The atom Hydrogen would need only 2 electrons but most need 8.
