Voss final

How do you find the molar mass of an element

Add the molar mass of each element

What types of elements are along the staircase on the periodic table

Metalloids

What elements are to the right of the staircase

nonmetals

What elements are to the left of the staircase

metals

What group is unreactive on the periodic table

Nonmetals (noble gases)

What does the atomic number of an element tell you

Number of protons number of electrons in location

How do I find the number of neutrons in an element

Atomic number minus atomic mass

Alkali metals are located in what group of the periodic table

Group 1

Atomic size

increases from top to bottom within a group and decreases from left to right across a period.

Electronegativity

Ability of an Atom to attract electrons to itself; increases going up and to the right

Ionization energy

The amount of energy required to remove an electron from an atom; increases going up and to the right as electrons move closer to the nucleus

How can you tell how many valence electrons an element has

group number (column)

Cation

A positively charged ion

Anion

A negatively charged ion

Alpha decay

4/2 He, The nucleus emits an alpha particle

Beta decay

0/-1 e, when an electron is lost

Positron decay

a nuclear reaction in which a positron is emitted

diatomic elements

H2, N2, O2, F2, Cl2, Br2, I2, elements that can never exist alone

Combustion

Something reacting with oxygen

Ionic bond

Formed when one or more electrons are transferred from one atom to another

Why do elements produce differently colored flames when held in a Bunsen burner

Electrons in partially filled the d orbitals jump to different orbitals and fall back down, releasing energy at different wavelengths

What type of reaction consist of a single product
Ex) A + B -> AB

Synthesis

Double replacement

Two compounds react to form to new compounds
Ex) AB+CD -> AD + CB

Neutralization

A reaction between an acid and a base
Ex) HX + YOH -> H2O + XY

Decomposition

A chemical reaction that breaks down compounds into simpler products.
Ex) Ab-> A + B