How can we help?

You can also find more resources in our Help Center.

18 terms

8th Grade Science: Chemical Interactions Final Review

Chapter 1 - Atoms and bonding
STUDY
PLAY
atomic number
the number of protons in the nucleus of an atom
atomic mass
Number of Protons + Number of Neutrons
electrons
negatively charged particles that move around outside the nucleus of an atom
protons
small, positively charged particles that are found in the nucleus of an atom
neutrons
small, uncharged particles that are found in the nucleus of an atom
electron dot diagram
a representation of the valence electrons in an atom, using dots
valence electrons
the electrons that are in the highest energy level of an atom and that are involved in chemical reactions
periodic table
a system used worldwide for organizing elements into categories
ion
an atom or group of atoms that has become electronically charged
chemical formula
a combination of symbols that represents the elements in a compound
group/family
elements in the same vertical column of the periodic table
period
elements in the same horizontal row of the periodic table
ionic bond
the attraction between oppositely charged ions
covalent bond
a chemical bond formed when two atoms chare electrons
single covalent bond
a bond formed when two atoms share a pair of electrons
double covalent bond
a bond in which two atoms share two pairs of electrons
triple covalent bond
a bond formed by sharing three pairs of electrons
metallic bond
an attraction between a positive metal ion and the electrons surrounding it