chemistry
What is Mass?
amount of substance something contains
What is Conservation?
When Mass is not Created or destroyed
What is concentration?
measure of mass
What is Volumne?
3D Space
What is Mole
amount of substance containing number of particles
What is Limiting reactant
a Reactant thats comepletely used up
What is Acid?
substance that Forms solutions less than Ph 7
What do Acids form?
They form H+ ions
What is a Base?
substance bigger than Ph 7
What is an Alkali?
base dissolves In water to form A solution greater than Ph7
What is Neutral
A substance That is Ph7
What is a Salt?
substance formed when Hydrogen ion in an acid is replaced by a metal ion
What is Oxidation
They gain oxygen but lose electrons
What is Reduction?
They lose Oxygen but Gain electrons
What do Acid + Metal make?
Salt + Hydrogen
What does Acid + Alkali make?
Salt + water
What does Acid + Base make?
Salt + Water
What is Cathode?
Postively charged ions
What is Anode?
negatively charged Ions
What is Electrolyte?
Liquid,contains Free moving ions
What is Electrolysis?
breakdown of a substance
What is Inert
unreactive
What is Ions
charged particle produced by Electrons
What is extraction?
Removal
What is Endothermic?
Reaction Takes In Energy
what is Exothermic?
A reaction that transfers energy
What is Thermal Decommposition?
Breakdown of a substance
When is Energy Changing in Reactions?
- Energy is taken when bonds are broken In reactants
- Energy is realeased when Bonds are formed in Products
Name Three EXO reactions
- Oxidation
- Combistion
- Neutralisation
Name 2 ENDO reactions
-thermal Decomposition
-sodium Hydrogen carbonate + critic acid
Is Protons Negative or Positive?
Positive
Is Neutrons Postive or negative?
negative
Name Two properties Of ionic compound
- High melting point
- strongs bonds
What is the Total mass number of protons and neutrons in an atom called?
the mass number
how many Different elements are in one molecule
2
what is the total number of atoms in one molecule
3
Why Do Negative ions move to Positive electrode
Because Opposites attract
What does H+ and OH- make?
Water