Formulae And Equations Flashcards
What is an atom?
The smallest part of an element that can exist
What is a compound?
A substance formed by the chemical union of two or more elements
What is a covalent bond?
A bond between atoms formed when atoms share electrons to achieve a full outer shell of electrons
What is a covalent compound
Compounds, commonly formed between non-metal elements, by sharing electrons between atoms to form covalent bonds
What is an electron?
A subatomic particle, with a negative charge and a negligible mass relative to protons and neutrons
What is an element
A substance made of one atom only
What is a formula
A combination of symbols that indicates the chemical composition of a sugar
What does the term insoluble mean
Unable to dissolve in a particular solvent.
What is an ion
An electrically charged particle, formed when an atom or molecule gains or looses electrons
What is ionic bonding?
It forms between two atoms when an electron is transferred from one atom to the other, forming a positive-negative ion pair
What is an ionic compound?
It occurs when a negative ion (an atom that has gained an electron) joins with a positive ion (an atom that has lost an electron
What is a molecule?
A collection of two or more atoms held together by chemical bonds
What is a particle
A general term for a small piece of matter
What is a precipitate
A suspension of particles in a liquid formed when a dissolved substance reacts to form an insoluble substance
What is a precipitation reaction?
A reaction in which an insoluble solid if formed when certain solutions are mixed
