Atoms
Periodic Table
Changes
Chemical Equations
100
Atoms contain these three types of particles
protons, neutrons and electrons
100
From an elements location in the periodic table, you can predict
its properties
100
The process that changes matter into one or more new substances is
chemical change
100
Where are the co-efficients? Where are the subscripts?
co-efficients are before and beside the element's symbol, and the subscript is below and behind the element's symbol
200
The charges of protons, neutrons and electrons
postive, none, negative
200
Elements in a column of the periodic table are?
in the same group
200
A solid that forms during a chemcial reaction
precipitate
200
This is a short way to show a chemical reaction
chemical equation
300
An atom is neutral because it has an equal number of
protons and electrons
300
In the first periodic table, the elements were arranged by?
increasing atomic mass
300
The only sure evidence of a chemical reaction is
the production of new materials
300
Where are the products and reactants in a chemical equation?
products are on the right and reactants are on left.
400
The type of electrons involved in bonding
valence electrons
400
Ice melting into water is an example of
a physical change
400
What do the numbers in a chemcial reaction tell you?
how many atoms of each substance
500
What is the greatest number of valence electrons an atom can have?
8
500
What happens to energy during a chemical reaction?
Energy is neither created or destroyed
500
What is the principle of conservation?
Matter is not created or destroyed
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