Unit 1 & 2 Chesmistry
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Unit 1 & 2 Chesmistry - Leaderboard
Unit 1 & 2 Chesmistry - Details
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41 questions
| 🇬🇧 | 🇬🇧 |
| What does a pure substance consist of? | Element + compound |
| Types of Mixtures | Homogeneous and heterogeneous |
| Isotope | Atom with same number of protons (atomic #)and different number of neutrons (mass #) |
| How do you find density? | Mass over volume |
| Count the least # of sig figs when using... | Multiplication and division |
| How to find mass? | Density x volume |
| How to find volume? | Mass over density |
| Another name for chemical reaction | Chemical change |
| Solid, liquid or gas mixture that is uniform structure all throughout (cannot be seen separately) | Homogeneous mixture |
| A mixture that is not uniform and can be seen separately. | Heterogeneous mixture |
| Single type of atom | Element |
| How close to the actual answer.. | Accuracy |
| Use decimal places in sig figs when.. | Adding and subtracting |
| J.J Thomson | Used cathode ray to discover electrons and develop Plum Pudding Model. |
| Cathode is | Negative |
| Anode is | Positive |
| What did Rutherford discover? | 3 kinds of radioactivity; beta,alpha and gamma |
| What did Rutherford's gold foil experiment tell us? | That every atom has a nucleus |
| Democritus | First to suggest atoms existence. |
| Dalton | Atomic weight and atomic theory. |
| Millikan | Calculated charge of proton/electron with oil drop experiment |
| Chadwick | Discovered neutron |
| Amu | Atomic mass units |
| Hindenburg | Found the uncertainty of electrons. |
| Order of atom models | Dalton/Thomson/Rutherford/Bohr |
| Ion | Atoms with a charge |
| Electron Cloud | Shows most responsible place where electrons are |
| Who found out the atom was 99% empty | Rutherford |
| Why is Bohr model wrong | It does not support the uncertainty theory and doesn't work for larger atoms. |
| Mass spectrometer function | Uses ions, chemical substances,electricity and magnetic fields to get the mass of a charged atom |