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Chemistry facts quiz - Statistics
General Stats
- This quiz has been taken 75 times
- The average score is 8 of 11
Answer Stats
| Question | Answer | % Correct |
|---|---|---|
| what is a version of an atom element with the SAME NUMBER OF PROTONS but a DIFFERENT NUMBER OF NEUTRONS? | isotope | 95%
|
| in group seven, reactivity does what as you go down the group? | decreases | 92%
|
| In group one, reactivity does what as you go down the group? | increase | 91%
|
| what type of reaction is where energy is absorbed from the environment? | endothermic | 80%
|
| what type of reaction is where energy is released into the environment? | exothermic | 80%
|
| what is the number of electrons and protons represented by? | atomic number | 72%
|
| what does the mass number represent the total number of? | protons and neutrons | 72%
|
| mass / Mr is used to calculate the what? (think of the mammal) | moles | 71%
|
| what provides a surface upon which chemical reactions can take place with a lower activation energy? | catalyst | 60%
|
| what practical is used to calculate the concentration of one of the reactants? | titration | 42%
|
| Avogadro's constant states the the number of particles in one mole is what? | 6.02*10^23 | 17%
|
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