Answer:
Explanation:
Here, we want to describe the relationship between the volume and temperature of an ideal gas
This relationship is defined by Charles' law
From this law, we know that the volume of a given mass of gas is directly proportional to its temperature at a fixed pressure
What this means is that as long as the pressure remains unchanged, when the volume increases, the temperature increases, and when the volume decreases, the temperature decreases
These can be represented by the mathematical formula below:
Answer: Correct options are as follows.
- salt is not chemically bonded to water.
- salt and water retain their own chemical properties.
Explanation:
When salt is dissolved in water then it means that it is a physical change as salt has completely dissociated into ions but they are not chemically combined to the water molecules.
As a result, both salt and water will retain their chemical properties.
For example, NaCl when dissolved in water will dissociate as follows.
Only the particles of salt have evenly distributed in water.
And, when a components of a salt chemically combine with another substance then it will form a new compound.
Therefore, we can conclude that salt dissolved in water is a solution, therefore:
- salt is not chemically bonded to water.
- salt and water retain their own chemical properties.
Answer:
In molecular compound atoms are held together through covalent bond. It is formed between the non metals.
In ionic compounds positive and negative ions held together through electrostatic attraction. It is formed between metal and non metal.
Explanation:
Ionic compound:
In ionic compounds positive and negative ions held together through electrostatic attraction. It is formed between metal and non metal.
For example:
Sodium chloride is ionic compound. Te sodium metal lose it electron and this electron is accept by the chlorine atom. Sodium became positive ion while chlorine became negative ion. The forces develop between them are electrostatic forces.
Molecular compound:
In molecular compound atoms are held together through covalent bond. It is formed between the non metals.
For example:
Carbon dioxide is molecular compound. It is made up of carbon and oxygen atoms. Both atoms share the electrons with each other and form two double bond O=C=O.