Periodic table
What are the vertcle columns called?
Groups
How and why do atoms become ions?
By giving and taking electrons to gain a full outer shell
How and why do atoms form covalent bonds
by sharing electronsto gain a full outer shell
What type of reaction releases energy
exothermic
What are the three conditions of collison theory?
Must collide, collide with enough energy and in the correct orientation
What does the group number tell you about and atoms structure
the number of valence electrons
Ionic bonds for between which types of elements?
A metal and a non-metal
What type of elements can form covalent bonds?
non-metals only
What type of reaction involves the swapping of anion/cation pairs in ionic compounds?
precipitation or double displacement reactions
How does a catalyst increase reaction rate
By lowering the activation energy by providing an alternate reaction pathway
Which group of elements form 1- ions
group 17 the halogens
Name the following compounds
NaOH
CaCL2
KNO3
Sodium hydroxide
Calcium Chloride
Potassium Nitrate
List 4 electronnegative atoms
F, O, N Cl, S, I, Br
Which type of reaction produces a salt, and hydrogen gas as products
Reaction of acid and metal
List the five factors that affect reaction rate
Concentration, temperature, surface area, agitation and catalyst
Name 3 transition metals that have a charge of 2+
Zn, Fe, Co, Cu
Give and example of a substance that has the following molecular shapes
Bent
Tetrahedral
Linear
water
methane
carbon dioxide
Write a balanced equation for the reaction of Ag2SO4 and NaCl
Hint - it is a precipitate reaction
Ag2SO4 (aq) + 2NaCl(aq) --> 2AgCl (s) + Na2SO4 (aq)
Explain why a glow stick glows brighter when placed in hot water
The heat gives the pprticle more energy causing them to move faster thus creating more collisions and more high energy collisions resulting in more successful collisions thus a higher reaction rate
All ions have the same elctron configuration as which group of elements?
The noble gases
Write the formulas of the following ionic compounds
Magnesium fluoride
Lithium sulfide
Aluminium oxide
MgF2
Li2S
Al2O3
Explain what makes a molecule polar ( a diagram might help)
there is an imbalance of electrons within the molecule with more electrons do one end than the other. This creates a dipole causing the molecule to be polar
Explain what the purpose of a titration is
a mehod usd to use the reaction of a solution of known concentration to determine the concentration of an unknown solution
Drescribe an experiment you could use to test the effect of concentration on reaction rate
correct IV, DV and CVs