Chemistry Flashcards
What are some things that affect the rates of reactions?
Temperature, concentration, agitation, surface area catalysts enzymes.
What is an isotope?
The different forms of the same element
What are the different types of chemical reactions?
Decomposition reactions, combination reactions, oxidation and reduction reactions, metal displacement reactions and precipitate reactions.
What is a decomposition reaction?
When a single reactant breaks down to form two or more products.
What is a combination reaction?
When two reactants combine to form a single substance.
What is an oxidation reaction?
When oxygen combines with a substance during a chemical reaction.
What is a reduction reaction?
When a compound loses oxygen atoms during a chemical reaction.
What is a metal displacement reaction?
When a more reactive metal is placed into a solution of a less reactive metal, the solution will turn into a solution of the more reactive metal and the solid will turn into the less reactive metal.
What is a salt?
An ionic compound, if this compound has one or more metal atoms it is called a metallic salt.
What happens when you change the atomic number of a substance?
You change the substance.
What determines of what type of bond it is?
Whether the atoms bonding are metal or non-metal.
When does ionic bonding occur?
When metallic elements bond with non-metallic elements.
What are some characteristic of ionic bonding?
- Non-metallic atoms have a strong hold on their own electrons and remove outer shell electrons from metal atoms
- Electrostatic forces pull the positive and negative ions together to form a string ionic bond.
- the ions form a lattice structure.
When does covalent bonding occur?
It occurs when non-metallic atoms bond together. They share some of their outer-she’ll electrons.
When does metallic bonding occur?
When two or more metal atoms bond.
