Chemical Bonding Flashcards
What is a compound
a combination of two or more different elements in a fixed ratio.
What is a chemical bond
a bondthat holds atoms together in a chemical compound
what is a chemical reaction
the combining of one or more substances to form completely new substances with different physical properties.
what is a molecule
what is formed when two or more atoms are covalently bonded together.
what is a a scientific model?
a representation of a particular phenomenon in the world. A scientific model could be a diagram or a model of an aeroplane. The purpose is to make what you are modelling easier to understand.
what do models help with
they help usrepresent,describe,explain, andreasonabout the material world
Why does chemical bonding occur
due to the valence electrons of different atoms
different atoms combine to try and achieve a noble gas state (full valence shell) for all the atoms involved.
what is a definition of a chemical bond
Achemical bondis a mutual attraction between two atoms resulting from the simultaneous attraction between their nuclei and the outer electrons.
what happens to atoms that do not have a full valance shell
they are unstable if they do not have a full valence shell, which makes them reactive, meaning that they will easily react with other elements or compounds to achieve a stable state.
