Which method of separation would be ideal for a mixture of water and sand?
Which method is used to separate dyes in ink?
What separation method would be most effective in separating ethanol from a solution of ethanol and water?
Pair the atomic structure with the appropriate description
| Stavka koja se može prevući | arrow_right_alt | Odgovarajuća stavka |
|---|---|---|
Neutrons | arrow_right_alt | The dense center of the atom |
Protons | arrow_right_alt | Negatively charged particles around the nucleus |
Nucleus | arrow_right_alt | Positively charged particles in the nucleus |
Electrons | arrow_right_alt | Neutral particles in the nucleus |
Match the scientist to the correct idea or experiment about atomic structure they contributed
| Stavka koja se može prevući | arrow_right_alt | Odgovarajuća stavka |
|---|---|---|
J.J. Thomson | arrow_right_alt | Discovered the nucleus using his gold-foil experiment |
Ernest Rutherford | arrow_right_alt | Proposed that electrons orbit the nucleus in specific layers |
Niels Bohr | arrow_right_alt | Identified the electron, leading to the 'plum pudding' model |
John Dalton, in his atomic theory, proposed that atoms can be destroyed in chemical reactions.
Ernest Rutherford's gold foil experiment proved that an atom is mostly empty space with a dense center, now known as the nucleus.
J.J. Thomson is credited for the discovery of the electron through his cathode ray experiments.
The space occupied by electrons is much greater than the space occupied by the atomic nucleus
The atomic nucleus holds nearly all the mass of the atom but only occupies a fraction of the space
Electrons are located inside the atomic nucleus