Post on 03-Jan-2016
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Ionic bond
when an atom lends one or more electrons to another that receives them.
Covalent bond
Bond that forms when atoms share electrons
Atomic number
The periodic table of the elements arranges the elements in order of increasing …..
metals
Tend to be hard, shiny, and are good conductors of heat and electricity.
Non-metals
tend to have dull surfaces, are good insulators but poor conductors of heat and electricity
periods
the horizontal rows on a periodic table
Families
the vertical columns on a periodic table
Noble gases
the most stable elements on the periodic table of the elements.
liquids
Mercury and bromine exist as ________ at room temperature
gases
Hydrogen and oxygen exist as gases at room temperature
solids
Copper and lead exist as ______ at room temperature.
Physical
Length, mass, volume, and density are examples of _________ properties
chemical
Flammability and corrosiveness are examples of _________ properties
physcial
Tearing a sheet of paper in half is an example of a __________ change
chemical
Burning a sheet of paper is an example of a ______ change
synthesis
A chemical equation in the form of: A + B AB, is an example of a ______ reaction..
decomposition
A chemical equation in the form of: AB A + B, is an example of a ________ reaction.
What technique would you use to find the volume ofAn irregularly shaped rock?
Water displacement
What could you use to separate magnetic iron particles and
non-magnetic sand?
A magnet
8
Oxygen’s atomic number is 8 and its mass is 16, how many protons does it have?