Atoms
three components that make up atoms
What are Protons, Neutrons, Electrons?
A substance made up of only one type of atom
a) Element
b) Compound
c) Molecule
d) Mixture
What is an element?
2H2O2 --> 2H2O + O2
Type of reaction
What is a decomposition reaction?
CaCO3 --> CaO + CO2
balanced or not balanced
What is balanced?
charge of protons, neutrons and electrons
What are Proton = positive; Electron = negative:
Neutron = neutral?
A substance with 2 or more different atoms chemically bonded together
a) Element
b) Compound
c) Molecule
d) Mixture
What is a compound?
total starting mass must equal the total resulting mass (atoms in = atoms out)
What is the Law of Conservation of Mass?
N2 + H2 --> NH3
balanced or not balanced
What is not balanced?
outer shell
a) Outside shell
b) Largest shell
c) Valence shell
d) Reactive shell
What is the Valence shell?
water - element or compound
Bonus points for an explaination why.
Water is a compound - it is made up of 2xH and 1xO chemically bonded together
Type of Reaction - carbon and oxygen make carbon dioxide
What is combination or synthesis reaction?
large number used in front of formulae to balance a chemical equation
What is a coefficient?
carbon electron shells
a) 1
b) 2
c) 3
d) 4
What is 2 shells?
2 elements bond together to make salt
What are Na - Sodium and Cl - Chlorine?
Two chemicals react together and produce a significant amount of heat, causing an explosion.
type of reaction ?
What is an Exothermic reaction?
Zn + 2HCl --> H2 + ZnCl2
balanced or not balanced
What is balanced?
sub-atomic particles in the nucleus?
What are Protons and Neutrons?
element with the symbol K?
What is Potassium?
pH scale ranges between what 2 numbers
What is 1-14?
___CH4 + __ O2 --> __CO2 + __H2O
Coefficients to balance chemical equation
(double points if you can state the type of reaction as well)
What are 1,2,1,2?
What is a combustion reaction?
2 subatomic particles have the similar mass?
What are Protons and Neutrons?
lightest chemical
What is Hydrogen?
acid and base --> salt and water
What is a Neutralisation reaction?
Oxygen is bubbled through hydrochloric acid to produce water and chlorine gas.
Balanced chemical equation
What is O2 (g) + 4HCl (aq) --> 2H2O (l) + 2Cl2 (g)?