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Con. Physics 32
science
| Question | Answer |
|---|---|
| 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
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