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Who invented the Bohr model and what does it look like?
Niels Bohr created this model; electrons move around the positive atomic nucleus.
Why is it necessary that an electron returns to the positive terminal of the battery each time another electron leaves the negative terminal?
Electrons are negatively charged, and so are attracted to the positive end of a battery and repelled by the negative end. So when the battery is hooked up to something that lets the electrons flow through it, they flow from negative to positive.
Why does an atom that has lost an electron have a positive charge?
Every atom has a positively charged nucleus containing protons, each with a 1+ charge. Electrons, each with a -1 charge surround the nucleus. In a neutral atom the number of electrons is equal to the number of protons, so there is no net charge. If an atom loses electrons it will have more protons than electrons resulting in an overall positive charge. For example, a neutral magnesium atom has 12 protons and 12 electrons, resulting in an ion with 12 protons and 10 electrons. Since there are two more protons than electrons in this ion, the overall charge is 2+
How do protons attract electrons through a wire?
firstly you need a battery or a cell to produce a p.d or to produce current (flow of electrons). the opp charges will always attract each other. therefore, the electrons travel through the wire from the -ve terminal of the battery to the +ve.
When was Table of the Elements created?
Table of the Elements was created in 1993.
What do Two or more elements of opposite charge make when they combine?
When two or more elements of opposite charge combine, they form an ionic bond. Ionic bonds are created when one element transfers electrons to another, resulting in the attraction between the positive and negative charges of the elements.
Positive ions and electrons can flow in a a solution but only electrons can flow in wires. What causes the electrons to move?
In wires, the movement of electrons is driven by an electric field created by a voltage source. This electric field exerts a force on the electrons, causing them to move. In contrast, in a solution, positive ions and electrons can move because of the flow of electric current through the solution.
What is the driving force for the flow of electrons in battries?
The driving force for the flow of electrons in batteries is the potential difference, or voltage, created between the positive and negative terminals. This potential difference causes the electrons to move from the negative terminal (anode) to the positive terminal (cathode), creating an electric current.
Who invented the Bohr model and what does it look like?
Niels Bohr created this model; electrons move around the positive atomic nucleus.
When an ion is created the number of these is changed in the atom?
electrons. the atom either gains or looses electrons to become negatively or positively charged. An ion can also be formed by the addition or subtraction of a neutron.
How does electricity flow from a battery through a circuit?
Electricity flows from a battery through a circuit when a complete path is created for the electrons to move. Electrons move from the negative terminal of the battery through the circuit to the positive terminal. This flow of electrons creates an electric current that powers the components in the circuit.
When was Ancient Electrons created?
Ancient Electrons was created in 2009.
Current flows from plus ve to -ve or-ve to plus ve?
There are two ways to look at current. Conventional current (measured in amps) flows from positive to negative. This model works for the vast majority of electrical engineering purposes. However, current is created by the movement of electrons. Electrons have a negative charge so electrons moving in one direction will give rise to conventional current in the opposite direction. Therefore, although current flows from positive to negative, electrons flow from negative to positive.
When was A Positive created?
A Positive was created in 1998.
What causes electrons to flow when a switch is turned on?
When a switch is turned on, it creates a closed circuit that allows electrons to flow from the negative terminal of the power source to the positive terminal. This flow of electrons is driven by the electric field created by the voltage difference between the two terminals.
What the difference between positive and negative electrons?
an electron always has a negative chargea positron is identical in all respects to an electron (sometimes it is called a "positive electron"), except it always has a positive charge and is antimatter (not matter)If an electron and a positron meet they will both cease to exist (annihilation) and gamma ray photons will be created.
What is meant by a shared or lose pair of electrons in covalent bonding?
This means that when a compound is created, the elements create bonds in order for electrons to be shared equally. Every element wants to have a full octet in order to be stable. To complete this, both elements pull at the electron(s), and it gravitates towards each element.
