Phase changes occur at specific temperatures under standard pressure and involve either absorption or release of heat energy. This process involves the modification of kinetic energy and intermolecular forces.
The relationship between phase changes and temperature or heat energy is that phase changes occur at specific temperatures under standard pressure and involve either absorption or release of heat energy. This is based on the theory of kinetic energy and intermolecular forces. For instance, when ice melts to become liquid water (also known as melting), it does it at a specific temperature which is 0 degrees Celsius under 1 atm pressure. During this phase change, the ice absorbs heat energy from the surroundings without changing its temperature.
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In an electromagnetic spectrum, when an electromagnetic wave passes from space to matter, some part of the energy is absorbed by the matter and it increases its energy.
The electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.
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Answer: Conduction
Explanation: MODES OF HEAT TRANSFER
Conduction: This type of heat transfer happens when there is direct contact between the two object.
Convection: This type of heat transfer happens when there is a movement of fluid (liquid or gas).
Radiation: This type of heat transfer happens when there is direct transfer of energy through space.
Thus as there is direct contact between the mug and the tea, the heat transfer occurs through conduction.
B. 90
C. 25,61
D. 17,0
B. the number of neutrons
C. the number of electrons
D. the total number of protons and neutrons
The number of protons
for all atoms of mercury will remain the same while different isotopes may have different number of neutrons.
Explanation:
Atoms should have equal numbers of protons and electrons. In our example, an atom of thirty six|chemical element, it should contain thirty six electrons since it contains 36 protons. Electrons are organized around atoms in a very special method.
Given statement that a single replacement reaction is reaction in which one element replaces similar element within compound is true as in these reactions similar element displaces other element from it's compound.
An element is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.
Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.
The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.
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Answer:
I believe its True
B. the process of diffusion.
c. a lower concentration of perfume particles the the other corners of the room.
D. a higher concentration of perfume particles the the other corners of the room.