C) its potential energy increases and its electric potential increases. D) its potential energy decreases and its electric potential decreases. Answer: B Diff: 2 Type: BI Var: 1 Page Ref: Sec. 17.1-17.3 6) Several electrons are placed on a hollow conducting sphere. They A) clump together on the sphere's outer surface.
When heated, the atoms of each element in the mix absorb energy causing its electrons to rearrange from their lowest energy state to a higher excited state. As the electrons plummet back down to their lower energy state the excess energy gets emitted as light. Each element releases a different amount of energy and this energy is what determines the color or wavelength of the light that is emitted. For instance, when sodium nitrate is heated, electrons in the sodium atoms absorb the energy and get excited. When electrons come down from the high they release their energy, about 200 kilojoules per molecule, or the energy of yellow light.
Red phosphorus does not react rapidly with air. The third form, black phosphorous, is made under high pressure, looks like graphite and, like graphite, and has the ability to conduct electricity. Some compounds that contain phosphorus are Abate, Crufomate, Dioxathion, Ethion, Fenthion, Malathion, Phosphine, and Sulprofos. Those are some of the many compounds that contain phosphorus. Some chemical properties of phosphorus are that it is reactive with, air at times, and it is poisonous, it also has an electronic shell.
In this sort of example you should choose one direction to be positive and the other direction to be negative. The example below illustrates this point. I will choose the right to be positive and the left to be negative. Before being fired After being fired -pcannon +pball p=0 pball - pcannon = 0 Sample Question 8 Sample Question 9 Static electricity In static electricity when two objects are rubbed together the electrons move from one object to another. This causes one object to have an overall positive charge and the other object to have an overall negative charge.
When two different atoms are bonded together, each attracts the electrons differently like a tug-of-war between two unequal teams, producing a dipole. The positive part of one molecule is then attracted to the negative part of another molecule. The shape of a molecule also contributes to the formation of a dipole. Molecules containing three or more atoms may be linear in shape or bent. Depending on how symmetrical or how bent the molecule is, the formation of a dipole in molecules will differ.
What causes intramolecular force? Intramolecular forces create solids and liquids. This type of force is caused by charged particles inside the atoms that make molecules, as the particles attract and repulse .As two molecules approach each other the negative charged electrons in one molecule are attracted to the positive charge nuclei in the neighbouring molecule. As this attraction takes place the electron is also repelled by the other electrons in the other molecule. This attraction and repellent of can cause temporary distortion of the electron cloud of a molecule so that a weak overall attraction exists between two molecules.
The Flame Test Lab Objective- Given Materials- Given Procedure- Given Results- Element Color Sr- Red Orange Ba- Yellow Orange Na- Bright Orange Li- Hot Pink Ca- Orange Cu- Green, Aqua, Blue Conclusion Questions- 1. The process by which the colored flame is produced is the release of light energy. When heat energy is added to an element, its electrons move from their ground state, to an excited state. This means the element's electrons are jumping from one orbital to another. When the heat is released, the electron then jumps back into its ground state, or back into its original orbital.
Technically, electricity is created by particles that carry a charge, usually electrons. In a wire or any other conductor, electrons move freely around the stationary atomic nuclei making up the conductor. Electrical current is the movement of these charged particles. In most conductors, the flow of electrons is impeded by some resistance, which can be thought of as collisions of electrons with the nuclei or other electrons. This creates an atomic-level "friction" which produces heat (and light in some cases, such as a light bulb or glowing heater element).
When atoms bond together they share or transfer electrons to achieve a more stable electron arrangement, often a full outer main level of electrons, like the noble gases. There are three types of strong chemical bonds: 1.__ionic______, 2.____covalent____ and metallic IONIC bonding • Ionic bonding occurs between metals and non-metals • Metal atoms 3. ___lose___ electrons • Non-metal atoms gain electrons • Positive and negative ions are formed Sodium chloride has ionic bonding. [pic] • The sodium ion is positively charged because it has lost a negative electron
Some nuclei magnetic are caused when the charge and spin are possessed and give various properties on the proton under investigation in which their behavior in an external magnetic field is influenced. Properties include the magnetic moment of the rotating nucleus will precess around the magnetic field direction under the influence of external magnetic field. The frequency of precession of a proton under investigation is directly proportional to the magnetic field strength. The frequency and precessional frequency of the proton under investigation must be matched with each other after irradiated with the radio frequency (electromagnetic) radiation in order to investigate the resonance. The proton is raised to the higher energy spin state after absorbing the electromagnetic energy.