Y9 Topic 1 Flashcards
What ls an atom?
The smallest particle of a chemical element that exists
What is a molecule?
A group of 2 or more different atoms chemically combined
What is a compound?
A substance that contains 2 or more elements that are chemically combined
What is a element?
A substance that is made up of only 1 type of atom
What is an electron?
Found in all atoms and has a charge of negative one
What is a proton?
A particle found in the nucleus of an atom. It has a one plus charge
What is a neutron?
Particles in atoms that have a neutral charge. And a relative mass of one
What is a solution?
A solution is when a solute is dissolved in a solvent.
What is a solvent?
The liquid in which a substance is dissolved.
What is a solute?
A soluble substance which dissolved.
Definition of a balanced chemical equation.
an equation for a chemical reaction in which the number of atoms for each element are the same for both the reactants and the products
What is a reactant?
The substances which participate in a chemical reaction
What is a product?
The chemical substances which are formed due to a chemical reaction between two or more chemical substances
Miscible
Liquids that can mix together (e.g. alcohol + water)
Immiscible
Liquids that Cannot mix together (e.g. oil + water)
Evaporation
When a liquid gains energy and becomes A gas
Condensation
When a gas looses energy (gets colder) and becomes a liquid
Distillation
A separation method that is the process of evaporation followed by condensation
Distillate
The pure liquid obtained after distillation
Boiling point
The temperature at which molecules are evaporating at the fastest rate (liquid → gas)
