| Question |
Answer |
| What is a proton? |
a positively charged particle. |
| Who was democritus? |
He believed an atom was a single hard particle. |
| WHo was aristotle? |
He thought all things were compsed of: air; earth; water; and fire. |
| What is an atom? |
The smallest unit of an element that maintais the properties of the element. |
| Who is John Dalton? |
All substances are made of atoms. |
| Who was Joseph Thomson? |
He proved the existance of negatively charged particles inside the atom. |
| Who was Ernest Rutherford? |
Proved atoms are mostly space and the nucleus is very dense and has a postive electical charge. |
| Who was Bohr? |
He proposed that electrons moved around an atom in a certain path or energy level. |
| Who were SHrodinger and Heisenberg? |
The exact path of an electron is unpredictable. |
| What is the electron cloud? |
The regions where electrons are most likely to be found. |
| What is the nucleus? |
The central part of the atom which contains protons, atomic mass, neutrons, and a mass number. |
| What is the atomic number? |
The number of protons in the nucleus. |
| What is a neutron? |
small particles with no electrical charge. |
| What is an electron? |
Negatively charged particles found outside of the atom in the electron cloud. |
| What is an ion? |
an electrically charged atom or group of atoms. |
| What is an isotope? |
Atoms of an element w/ the same # of protons but whose neuton # differs. |
| How does the the Gravitational force apply to atoms? |
B/c atoms are so small the gravitational force is small. |
| What is the Electromagnetic Force? |
Opposites arrtact. Same charges repel. |
| What is the strong force? |
Prevents repulsion of protons in the nucleus. |
| What is the weak force? |
A neutron can trun into a proton and an electron. |
Cardio Block2anatomy
