What formed the original atmosphere? – – Gases escaping from the interior of the earth.
– Condensing of water vapour to form oceans.
– Dissolving of CO2 in waters
– Increase in nitrogen due to it's lack of reactivity
– Increase in oxygen from photosynthesis.
ionic bond – A chemical bond resulting from the attraction between oppositely charged ions.
6.1 polar – uneven distribution of charge
Buffer System – Partnership between a weak acid and weak base that forms as acid dissolves in water. Hydrogen ions are accepted when a solution becomes acidic and releases hydrogen ions if the solution becomes basic.
BeI2 – Give the formula for:
Galvanic Cell – A device that uses spontaneous redox chemical reaction to generate. It converts chemical energy into electrical
ring stand – holds funnels, wire gauze above table
Observe – Using your senses to obtain information
inside the nucleus are the_____ and the _____ – protons, neutrons
Which one of the following is a correct definition of a base that is not dependent upon the solvent?
chemical bond – the attractive force that holds atoms or ions together
6.1 covalent bonding – chemical bonding that results from the sharing of electron pairs between two atoms
Which оne оf the fоllowing is а correct definition of а bаse that is not dependent upon the solvent?
Ernest Rutherford – 1911
created a nuclear model of the atom said that most of the mass was in the nucleus. The electrons are distributed outside the nucleus & occupy most of the volume
The bombardment of gold foil w/ alpha particles showed that some particles were deflected, which they were not expecting based on the current atomic model. Small percentage of alpha particles were deflected at large angles, which could be explained by an atom w/ a very small, dense, positively charged nucleus at its center
Chain Reaction – A chain reaction is a process whereby the nuclear fission process can continue by neutrons released by the fuel bombarding other radioactive atoms.
Anything that has mass and takes up space. – matter