Periodic Table
have properties of both metals and nonmetals
What are metalloids?
Food Digestion
What is a chemical change?
Element that is a good conductor
What is a Metal?
Balanced or Unbalanced
CH4+ O2→CO2+ 2 H2O
What is Unbalanced?
the rows numbered from 1-7
What are periods?
Food Coloring
What is a Physical Change?
Columns numbered 1-18
What are Groups or Families?
Formed between atoms of nonmetals
What are Covalent Bonds?
Balanced or Unbalnaced
4 Fe + 3 O2→2 Fe2O3
What is balanced?
An electron in the outermost shell of an atom that can participate in forming chemical bonds with other atoms
What is a valence electron?
Density
What is a Physical Property?
The difference between the initial volume and the volume after an object is submerged .
What is displacement?
Formed by transfer of electrons
What are Ionic Bonds?
Length x Width x Height
What is the formula for the volume of a Rectangular Prism?
A quick and easy diagram that shows the valence electrons in an element.
What is a Lewis-Dot Structure?
Sugar dissolving in Water
What is a Physical Change?
a single atom or several atoms bound together electro magnetically, forming the smallest particle that possesses all the characteristic physical and chemical properties of an element.
What is a Molecule?
Carbon Dioxide
What is a Covalent Bond?
Discovered method to help determine the volume of irregularly shaped objects
Who is Archimedes?
states that atoms like to have 8 valence electrons.
What is the octet rule?
Sublimation of Carbon Dioxide in the Atmosphere
What is a Physical Change?
a substance formed by the union of two or more chemical elements in fixed proportions, with properties different from those of its constituents
What is a Compound?
In the ionic compound iron bromide, the negative ion is
What is Bromide?
Results in decreased density
When matter is heated?