Atomic Theory
Name the three sub atomic particles, their charge and relative mass
Proton +1
Electron - 0
Neutron 1
What Law explains why we balance reactions
Law of conservation of mass
Describe the taste of a base
Bitter like soap
What is the element at the base of organic chemistry
Carbon
Finish and classify this reaction AgNO3 + K2Cr2O7 -->
Ag2Cr2O7 + KNO3 Double replacement
How many total electrons are how many valence electrons are in an atom of Silicon
14, 4
What coefficient in in front of the HNO3 when the reaction is balanced? __ HNO3 + CaCO3 --> Ca(NO3)2 + H2O + CO2
2
What colour does phenolphthalein become when exposed to a solution of pH 8
No colour/clear
Draw a Lewis dot diagram for the molecule CH4 and NAME it
Methane
Classify the reactions 1. Al +F2 --> Al2F3
2. Sn(OH) + HClO3 --> H2O + SnClO3
3. Cl2 + Mg3N2 --> MgCl2 +N2
1. Synthesis
2. Neutralization
3. Single Replacement
How do we calculate molecular mass
Protons + Neutrons
Name these two compounds : N2O3
Zn3P2
dinitrogen trioxide Zinc Phosphide
Is this an acid of a base HNO3
Acid
Draw the molecule : Heptane
/\/\/\
Give three ways to slow the rate of reaction between a strong acid and a powder
Dilute the acid, Solidify the powder, Reduce the temperature, Add an inhibitor
What elements are considered "diatomic"
H N O Cl F Br I
Give the chemical formula for the compounds: Sodium phosphide, Diiodine hexachloride
Na3P I2Cl6
A solution turns litmus paper red and methyl red yellow. What is its possible pH
5-6
Give two differences between a Lewis dot diagram and a Bohr diagram of an atom
Lewis dot only valence, with symbol.
Bohr all electrons, with # protons and neutrons
What two theories help us to understand the rate of reaction
Kinetic molecular theory, Collision theory
Draw the lewis dot diagramme for Calcium
. Ca .
Balance and name this reaction :
Mg(ClO4)2 + Na --> NaClO4 + Mg
Mg(ClO4)2 + 2Na --> 2NaClO4 + Mg
Magnesium perchlorate + sodium --> Sodium perchlorate + Magnesium
Finish and classify this reaction: H2SO4 + Al(OH)3
Al2(SO4)3 +H2O Neutralization
Draw the Lewis dot diagram of the two molecules below: Water and Table Salt
H-O-H and [Na]+ [:Cl:]-
Finish, classify and balance the equation
C3H8 + O2 -->
Combustion C3H8 + 5O2 --> 3CO2 + 4H2O