Science Midterm 2

is a representation of the valence electrons of an atom that uses dots around the symbol of the element. The number of dots equals the number of valence electrons in the atom. These dots are arranged to the right and left and above and below the symbol, with no more than two dots on a side. (It does not matter what order the positions are used.)

• Lewis Structure

• Periodic Table

• Formula

• covalent bond

atoms transfer electrons to each other. These bonds require at least one electron donor and one electron acceptor

• Ionic

• covalent

atoms with the same electronegativity share electrons ______bonds, because neither atom preferentially attracts or repels the shared electrons.

• ionic

• covalent

is the complete transfer of valence electron(s) between atoms. It is a type of chemical bond that generates two oppositely charged ions. In these bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion. these bonds require an electron donor, often a metal, and an electron acceptor, a nonmetal.

• ioninc

• covalent

Tags

NGSS.HS-PS1-3

This type of bonding occurs between two atoms of the same element or of elements close to each other in the periodic table. This bonding occurs primarily between nonmetals; however, it can also be observed between nonmetals and metals.

• ionic

• covalent

How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?

• 2

• 4

• 8

• 12

Tags

NGSS.HS-PS1-1

So we usually check the _______ _______ to see if our compound is made up of metals or nonmetals, or if it's just two nonmetal

• Periodic table

• Lewis Dot Sctructure

• formule

Tags

NGSS.HS-PS1-1

An ____ bond is formed between a metal and a nonmetal,

• ioninc

• covalent

________ bond is formed between two nonmetals.

• Ionic

• covalent

Tags

NGSS.HS-PS1-1

This tells the number of atoms of each kind in a formula number of atoms

• Period

• group

• exponent

• subscript