Science Test

What is an ion?

an atom or group of atoms that has become elecrically charged
What is a covalent bond?

a chemical bond formeed when two atoms share electrons
What is a metallic bond?

an attraction between a positive metal ion and the electrons surrounding it
What do valence electrons do?

valance electrons determines many properties of the element, including the ways in which the atoms can bond with other atoms
What remains the same from the top to the bottom in a group in the periodic table?

valence electrons
How do you identify how many valence electrons a family has?

by the group number
A molecule in which the polar covalent bonds do not cancel out will be _______.

polar
Name the characteristics of metals.

soft, malleable, ductile, and shiny
What are polyatomic ions?

an ion that is made of more than one --------
How many atoms are shared in a double bond?

4 atoms
What is an alloy?

is a mixture made of two or more elements that has the properties of metals

Author

Anonymous

111872

Card Set

Science Test

Description

10/24

Updated

2011-10-24T23:37:50Z

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