Exam Prep Flashcards
What does the group number represent?
It tells us how many electrons are in the outer valence shell
What does the period number represent
It tells us how many electrons shells they are
What is the definition of an acid?
A substance that releases H+ ions in water
What is the definition of a base?
A substance that releases OH negative ions in water
What is the definition of an Alkali?
A base that is soluble (able to desolve) and water
What is the process of neutralisation?
The process were Edge plus in o h negative ions
What is the charge of neutrons?
They are neutral no charge
What is the charge of electrons?
They are negatively charged
What’s the charge of protons?
They are positively charged
What does the atomic number represent?
The number of protons
What does the mass number represent
The number of protons and neutrons
Sodium hydroxide carbonate + sulfuric acid
Sodium hydroxide carbonate + sulfuric acid = sodium sulfate +water + carbon dioxide
How is sodium negatively charged?
Sodium is 1 - because it loses the electron to form a full valence shell
What is the combination Reaction?
A combination reaction is a reaction which two or more substances combine to form a single new substance.
What is a decomposition reaction?
A decomposition reaction can be defined as a chemical reaction in which one reactant breaks down into two or more products