So,
There are two basic types of changes in chemistry: physical changes and chemical changes.
Physical changes do not change the chemical identity of the substance; instead physical changes operate between molecules/atoms/ions/etc. Changes of phase and separation of different substances in a mixture are examples of physical changes. For example, when you change the phase of liquid water to gas, you are operating between the water molecules by breaking the intermolecular attractions. Yet you still have water, H2O. When you separate iron filings from a mixture of sand and iron filings with a magnet, you are, in a way, operating between the atoms of iron. Yet you still have iron and sand.
Chemical changes change the chemical identity of the substance. When you throw salt into water, the salt dissolves and is no longer salt. You get salt water, which is chemically different from water and salt. You have operated inside the salt compound.
Thus, changing matter from one form to another without a change in chemical properties would be a physical change.
1. How many neutrons are in the chlorine atom?
2. How many electrons are in the chlorine atom?
3. How many protons are in the chlorine atom?
Answer:
1. 18 neutrons
2. 17 electrons
3. 17 protons
Answer:
1. 18 neutrons
2. 17 electrons
3. 17 protons
Explanation:
pressure that is exerted by one gas as if it occupied a container by itself
half of the pressure that is exerted by the gases of a mixture on the container
Osum of the individual pressures that are exerted by two or more gases
The pressure that is exerted by one gas as if it occupied a container by itself best defines partial pressure in a mixture of gases. Therefore, option B is correct.
Partial pressure is defined as the pressure exerted by each gas in a container filled with more than one gas. The pressure of any gas contained within the container is referred to as its partial pressure.
The concept of partial pressure is derived from the fact that each specific gas contributes a portion of total pressure, which portion is the partial pressure of that gas. It's almost like using a percentage or fraction of the total to describe all the parts.
A gas's partial pressure is a measure of the thermodynamic activity of its molecules. Gases dissolve, diffuse, and react in gas mixtures and liquids based on their partial pressures, not their concentrations.
Thus, option B is correct.
To learn more about the partial pressure, follow the link;
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Answer:
pressure that is exerted by one gas as if it occupied a container by itself.
No Nope Notta, zilch