Properties of Substances
Reacts Violently with Water
Chemical/Physical Property?
Chemical
NaCl
Ionic
LiCl
Lithium Chloride
We call the substances at the start of an equation the _______________ and the substances at the end of the equation the _________________.
Reactants // Products
Which family on the periodic table is famously UNREACTIVE
Noble Gasses
Melts at 100 Degrees Celsius
Chemical or Physical Property?
Physical
C3H7OH
Molecular
Magnesium Fluoride
MgF2
The name of the reaction where metals combine with oxygen in the atmosphere
Corrosion
Build me a Carbon atom!
P+, N, e-
P:6 N:6 e:6
Which of the following is NOT a property of metals?
Shiny, High melting and Boiling Points, Very Brittle, Conducts Electricity
Brittle
The atoms of this type of compound SHARE their electrons.
Molecular
Carbon TetraHydride
CH4
These are ALWAYS products when combustion occurs.
CO2 + H2O
If an element is in Period 2 of the table, what information about its atomic structure could we derive from that information?
It has 2 electron shells.
Why do Lithium and Sodium have similar chemical properties?
They are in the same family (column), OR they have the same number of outer electrons.
This type of substance has an extremely high melting point.
Ionic
P2O5
Diphospohorus Pentoxide
H2 + Cl2 -> 2HCl
The student begins with 20.2 grams of hydrogen gas. They finish the reaction with 47.4 gram of Hydrogen Chloride. How much mass of Chlorine was present for reaction?
27.4 grams of Chlorine
A mystery element forms the ionic compound X2O. What family would this element likely be in?
Alkali Metals
An ionic compound is dissloved in water.
Physical or Chemical Change?
Chemical
Find the error in the statement below:
Molecular compounds are formed when two non-metals share their outer electrons and Ionic compounds are formed when one metal donates an electron and another metal receives an electron.
Ionic compounds cant have two metals. (non metals would receive an electron)
Al2O3
Aluminum Oxide
Balance the following reaction:
B + O2 -> B3O4
3B + 2O2 -> B3O4
A solution is different than a mixture because...
A solution has the particles fully dissolve into a solvent whereas a mixture the particles are simply stirred together.