Seneca Flashcards
Why are alkali metals stored in oil?
This is because they react with the oxygen in the air.
What pH level do acids start from?
They start from bellow pH7
What pH level do alkalis start from?
They start from over pH7
What pH is water?
Water is pH 7 (whixh is neutral)
What are the substances at the start of the reaction called?
Reactants
What are the new substances called?
Products
What is a thermal decomposition reaction?
It is when one reactant breaks down into a few different products.
What is an oxidation reaction?
It is when something reacts with oxygen to make a product that contains oxygen.
Meaning of combustion
Combustion is the scientific name for burning
What is a displacement reaction?
It is when the different parts of compounds swap due to changes in reactivity. The most reactive element can ‘push out’ another and form a new compound.
What is it called if something dissolves in water?
Soluble
What do we call salts that dissolve in water?
Soluble salts.
How to produce soluble salts?
We can produce soluble salts through a reaction between acids and solid, insoluble substances, such as pure metals, metal oxides, metal hydroxides, or metal carbonates.
Who were atoms discovered by?
John Dalton
What are the vertical columns of the periodic table called?
Groups
What is the first group of metals called?
Alkalis
What is the only metal that is liquid at room temperature?
Mercury
How many metals are there in the periodic table?
91
Metal is malleable. What does malleable mean?
It can bend into different shapes.
