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chem exam 1 review
| Question | Answer |
|---|---|
| Consider the question: Is there an attractive force between a pencil and the earth? is this a scientific question? | Yes, because it can be tested and answered through observations and experiments. |
| which of the following properties ascribed to atoms by the Greek do we still consider vaild? | Atoms are in constant motion. |
| Gold foil experiment- rutherford | most of the positively charged alpha particles shot a thin gold foil passed straight through. NUCLEUS |
| cathode ray tube- thompson | the beams from the cathode bent towards the positively charged plate. ELECTRON |
| which are the following contain atoms? heat, energy, dust, light, all the above. | dust |
| Majority of the alpha particles will be detected .... | It will go straight through the gold foil and the alpha particles go straight through the atom, because it is mostly empty space. |
| what did cathode ray tube prove false from Dalton's atomic theory | all atoms are indivisble and indestructible. |
| how would the strength of the electrostatic force change if the distance between two charged objects decreased? | the electrostatic force would be weaker. |
| true or false a nitrogen is made of the same type of atoms. | false, because an element is made of one type of atom. Nitrogen is an element that exists as diatomic molecules. |
| why dies the potential energy increase as two xenon atoms move extremely close together. | because the repulsive force, between the overlapping electron clouds, is dominant. |
Created by:
cruzjen4