Elements & Symbols
Name these elements: Na, O, K, Ca.
Sodium, Oxygen, Potassium, Calcium
How many electrons does the element Lithium have?
3
What is the product when a Sodium ion and a Chloride ion combine?
Sodium Chloride (Table Salt)
What colour would you expect Hydrochloric Acid to produce in a universal indicator test.
Red / Orange
What effect does increasing the temperature have on a chemical reaction?
It speeds it up.
What is the atomic mass of Silicon?
Approximately 28 (amu).
State the element that has the electron arrangement: 2, 8, 8.
Argon
What is the product of Li+ + Cl-?
LiCl
What general products are produced when a Carbonate and Acid are combined?
Salt, H2O, CO2
By using a powdered metal instead of a solid chunk of metal, what factor is increasing the rate of reaction?
Surface Area
What element has 12 protons, 12 electrons, and 12 neutrons
Magnesium (Mg)
State the electron arrangement of a nitrogen ion.
2, 8
Balance the following Chemical Equation:
Zn + O2 -----> ZnO
2 Zn + O2 -----> 2 ZnO
Define Neutralisation (use the word "ions" in your definition).
A chemical reaction in which an acid and a base react with each other and that results in no excess of H+ or OH- ions present in the solution.
What are the two requirements for a collision between reactant particles to produce a successful chemical reaction?
Sufficient force (energy) and correct orientation.
Name these compounds: SO42-, OH-, H2O, NO3-
Sulfate, Hydroxide, Water, Nitrate
Draw the electron configuration of the element Carbon.
See Drawing.
Complete the chemical equation:
KOH + HNO3 ----->
KOH + HNO3 -----> KNO3 + H2O
An unknown substance turns blue when universal indicator is added. A new substance is added and once mixed the solution turns yellow. Describe what happens to the concentration of H+ and OH- ions.
Initially there are more OH- ions than H+ ions. Afterwards there are more H+ ions than OH- ions.
Draw a to-scale diagram of 2 beakers with 50% and 100% concentrations (use different symbols if needed for particles).
Check Drawings.
How many of each subatomic particle does S2- and K+ have?
S2-: protons = 16, electrons = 18, neutrons = 16
K+: protons = 19, electrons = 18, neutrons = 20
Draw the electron configuration of fluorine and fluoride.
See Drawing.
Complete and Balance the chemical equation:
Ca(OH)2 + HCl ------>
Ca(OH)2 + 2 HCl ------> CaCl2 + 2 H2O
What compounds would you combine to produce Zinc Nitrate and Water?
Zinc Hydroxide (or Zinc Oxide) and Nitric Acid.
State the 2 ways overall in which Temperature, Concentration, and Surface Area increase the Rate of Reaction.
Increases the success rate of collisions (T)
Increases the frequency of collisions (T, SA, C)