chemistry unit 1 test

Average atomic mass equation

(relative abundance/100)(mass)

equation to find mass

protons + neutrons

what is an isotope?

Atoms of the same element, same number of protons but different number of neutrons

what is the mass unit called?

amu

subatomic particles vs atom

Identity, isotope, ion

Atomic Radius trend

increases as it moves down, decreases as it moves right

Ionization energy trend and Electronegativity trend

decreases as it moves down, increases as it goes right

Group name for group 1

Alkalai

Group name for group 2

Alkaline

Group name for group 3

Boron family

Group name for group 4

Carbon family

Group name for group 5

Nitrogen family

Group name for group 6

Oxygen family

Group name for group 7

Halogen

Group name for group 8

Noble gases

What does the 4 in 4f^14 mean?

Principle quantum number

What is Principle quantum number?

energy level of electron

what does the f in 4f^14 mean?

Angular quantum number

What is Angular quantum number?

type of sublevel the electron is on

what does the 14 mean in 4f^14

magnetic quantum number

What is magnetic quantum number?

3-d orientation

Spin quantum number

directional spin of each electron

Aufbau principle

Electrons fill the lowest energy orbitals first

Pauli exclusion principle

Each orbital can only hold 2 electrons with opposite spins

Hunds rule

One electron in each orbital until all orbitals contain 1 electron

what does the number next to an isotope mean?

mass number

where are the most radioactive elements on the periodic table?

Alkalai group

Similarities between protons, electrons and neutrons?

all subatomic particles and have mass numbers

Differences between protons, electrons, and neutrons?

have different charges

Difference between mass number and average mass number

mass number is the mass of an isotope and average mass number is all the isotope masses together.

why are elements netrual?

atom has same number of protons and neutrons in nucleus

which subatomic particle is involved in chemical reactions?

electrons

Periods on periodic table

Rows

Cations

positive charge

Anions

negative charge

What are the 3 limitations to the Bohr model?

Its 2d, only works for H, and treats electrons like particles instead of waves

How do members of the same group are similar?

They all have the same number of valence electrons

benefits of bohr model?

you can see all the subatomic particles spread out

How many orbitals and number of electrons does sublevel S have?

1 orbital and 2 electrons

How many orbitals and number of electrons does sublevel P have?

3 orbitals and 6 electrons

How many orbitals and number of electrons does sublevel D have?

5 orbitals and 10 electrons

How many orbitals and number of electrons does sublevel F have?

7 orbitals and 14 electrons

Why is the quantum model better than the bohr model?

its 3d and it treats electrons like waves instead of particles

Alkali elements are…

highly reactive metals

Alkaline earth elements are…

second most reactive metals

Halogen elements are…

highly reactive nonmetals

Noble gas elements are…

stable and nonreactive