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Are melting points of molecular substances higher than those of ionic substance?
Ionic substances have higher melting points.
What liquids repel water?
Some examples of liquids that repel water include oil, alcohol, and liquid wax. These substances have non-polar molecular structures, which causes them to repel water due to differences in their polarity.
Does other substances boil at the same temperature as water?
No, different substances have different boiling points due to variations in their molecular structure and intermolecular forces. Water boils at 100 degrees Celsius, but substances such as ethanol, which has a smaller molecular size and weaker intermolecular forces, boils at 78.37 degrees Celsius.
What are two substances of solid?
Two examples of solid substances are ice (solid water) and salt.
A union of substances into a new molecular structure is called?
The union of substances into a new molecular structure is called a chemical reaction. In a chemical reaction, chemical bonds are broken and new bonds are formed, resulting in a different molecular arrangement from the original substances.
What is the The breakdown of substances into simpler molecular substances?
Decomposition
Which high molecular weight substances are made up of repeating units of these molecules?
Polymers are high molecular weight substances made up of repeating units of monomer molecules. Examples include plastics, proteins, polysaccharides, and nucleic acids like DNA and RNA.
Do substances that usually contain covalent bonds have a giant or simple molecular structure?
Substances that usually contain covalent bonds have a simple molecular structure. Examples include elements like oxygen and compounds like methane. Giant molecular structures are typically found in substances with strong covalent bonds, such as diamond and quartz.
How do molecular substances fill their outer shell?
Molecular substances can only fill outer shells if there are enough electrons present for this phemena to occur. Electrons can also be taken from other molecular substances in a process known as a Reduction Reaction.
Do simple molecular substances conduct electricity?
Most molecular substances do not conduct electricity since the ions don't dissociate very well with molecular substances. However, most ionic substances do conduct electricity very well due to their ability to dissociate very well in water.
What are the some examples of homogeneous mixture?
Examples of homogeneous mixtures include salt water, sugar dissolved in water, and air. These mixtures have uniform composition throughout, meaning that the substances are evenly distributed at a molecular level.
What is a mixture of two or more substances that are evenly distributed?
A homogeneous mixture is a combination of two or more substances that are uniformly distributed at the molecular level. This means that the substances are mixed together completely without any visible separation. Examples include sugar water and air.
Do simple molecular substances have high or low melting and boiling points?
Simple molecular substances typically have low melting and boiling points. This is because the weak intermolecular forces, such as London dispersion forces, in simple molecular substances are easily overcome compared to the stronger bonds in ionic or metallic substances.
What organelles use molecular oxygen to convert and detoxify harmful substances?
The organelles that uses molecular oxygen to convert and detoxify harmful substances are the peroxisomes. They are found in the cytoplasm of the cell.
What is a characteristic property of molecular substances?
A characteristic property of molecular substances is that they have relatively low melting and boiling points compared to ionic compounds, due to the weaker intermolecular forces between molecules. Additionally, molecular substances are formed from discrete covalently bonded molecules, allowing them to exist as discrete units.
What are non-molecular substances?
Non-molecular substances are substances that do not consist of individual molecules but rather have a different type of bonding or structure. This can include ionic compounds like salts, network solids like diamond or quartz, and metallic substances like iron or copper. These substances do not exist as discrete molecules but rather as extended networks or arrangements of atoms.
What are substances in which the composition is the same throughout?
Homogeneous mixtures are substances in which the composition is the same throughout. This means that the components are evenly distributed at a molecular level, resulting in a uniform appearance and properties. Examples include saltwater and air.
