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Con. Physics 32

science

QuestionAnswer
What three things are involved in electrostatics? Electric charges, forces, behavior
We define electric charges, the forces between them, and behavior in materials as what? Electrostatics
What does electricity hold together to form molecules? Atoms
What do we call electricity when it is at rest? Electrostatics
The fundamental rule of all electrical phenomena is what? Like charges repel and opposite charges attract
Which is stronger Electric forces or gravitional forces? Electrical forces
Why are gravitional forces weaker then electric forces? Gravitional force only attracts while electric forces repel and attract
What do protons attract? Elections
Where do protons and electrons orbit? In the nucleus
What do electrons do when they are around other electrons? They repel
Tell what charge each of the following have: Protons, Electrons, and Neutrons Protons -Positive Electrons- Negative Neutrons- Neutral
True or false? Every atom has a positively charged nucleus surrounded by a negatively charged electron. True
True or false? All electrons are identical. True
All electrons have 2 identical features... What are they? 1. The same mass 2. The same charge
What is inside the nucleus? Protons and Neutrons
True or false? All protons are identical but neutrons are not identical. False-all protons and neutrons are identical
A proton is how many times larger then the mass of an electron? 2000 times
Even though a proton has a larger mass than an electron is its positive charge greater than the electrons negative charge? No, a protons charge = a electrons charge they are just opposite
Describe the mass of a neutron? The mass of a neutron is slightly larger than a proton but has no charge.
In terms of mass order electron, neutron, and proton? Neutron, proton, and electron
In terms of power order electron, neutron, and proton? 1. Electron = proton in power or charge 2. Neutrons have no power or charge
Why do atoms usually have a net charge that is neutral? There is the same number of protons and electrons inside an atom so it is neutral
What force holds p+ together if they have the same charge? The nuclear force
If an object has unequal numbers of electrons and protons what do we say the object is? Electrically charged
What is a charged atom called? Ion
Define: ion An atom that has gained or lost electrons
If an atom gains electrons what is it called? Negative ion
If an atom loses electrons what is it called? Positive ion
Tell which charge does not move? Protons
Which electrons are tightly bound to the atom? The electrons that are closest to the nucleus
Which electrons are less tight bound to the nucleus and can move? Outer electrons
What can effect whether or not the electrons are held tighter? The material of the object
What do we call materials that hold on to the electrons tighter? High electron- affinity
Can we create or destroy electrons? No, they are transferred
All charges of an object are represented by what kind of number? A whole number, an electron can not be a fraction or decimal
Created by: 16_apowell