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36 Cards in this Set

  • Front
  • Back
What characterizes a chemical reaction as combustion?
Addition of O2
What is th charge on potassium in the compound KCI?
+1
How many electrons does an oxygen ion have?
10
How many neutrons does an atom of carbon-14 contain?
8
What is the strongest type of chemical bond?
Covalent Bond
What is the mass of one mole of carbon Dioxide?
44 g/mol
How many molecules are present in 2 moles of O2?
1.204 x 1024
How many moles of CO2 will be produced from the reaction of 3 moles of acetylene with excess oxygen?
2C2H+5O---4CO2+2H2O
6 moles
What would be the oxidation state of the sulfur atom in sulfuric acid H2SO4?
+6
What is the correct electron configuration for neon?
Is22s22p6
What is the ground state electron configuration for zinc?
1s22s22s63s23p64s23d10
What is the correct name of MgSO4?
Magnesium sulfate
What is the correct formula for magnesium chloride?
MgCl2
Phenolphthalein changes from colorless to pink in basic solutions. At what pH value would the solution remain colorless?
8.4
Iodine and carbon dioxide undergo sublimation at room temperature and atmospheric pressure. What is the process?
Changing from solid to a gas.
A catalyst increases the rate of reaction by?
Lowering the activation energy.
Redox reactions are those that occur with a transfer of electrons. What would cause an increase in the oxidation number?
Oxidation
Chemical reactions in lilving systems proceed along catabolic pathways and there tends to be an increase in?
Entropy
Which outcome measure would most likely indicate that a sample of water contains acid?
pH
Three states of matter?
Solid, Liquid and Gas
What are the 2 types of mixtures?
Homogeneous and Heterogenous
What is a physical change?
No change has been made to the chemical composition.
What is an element?
The simplest of substances and is represented by specific letter of combination of letters.
Where can elements be found?
Perodic Table - elements asre arranged according to their chemical properties on the table.
What are compounds?
They are combinations of elements in whole number ratios.
What is a chemical reaction?
It is the breaking of bonds and the reforming of new bonds to create new chemical compounds with different chemical properties.
What does the atom consist of?
protons, neutrons, and electrons.
Protons have a negative or positve charge?
Positive
Nuetrons have what charge?
No charge
Electrons have what charge?
Negative
The nucleus contains what?
Protons and Neutrons
Where are electrons located?
In orbitals surrounding the nucleus.
What is radioactivity
Describes the emission of particles from an unstable nucleus.
What are the 2 types of chemical bonding?
Ionic Bond - electrostatic attraction between 2 oppositely charged ions - metals and non-metals.
A single covalent bond is formed when 2 atoms share a pair of electorns.
What is the strongest type of chemical bond?
Covalent Bond
What does Hydrogen Bonds involve?
Fluorine, chlorine, oxygen and nitrogen.