Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
How did Mendeleev orignally arrange the table in the early 1900's?
|
by atomic mass
|
|
the ____ of an element is the average mass of one atom.
|
amu
|
|
List each
particles mass, charge, and location |
proton, 1amu, +, nucleus
nuetron, 1amu, 0, nuecleus electron, 1/2000, -, electron cloud |
|
The atomic number of an atom tells you the number of _______ in the atom.
|
protons
|
|
The nuetroms of an individual atom can be found by subtracting the _____ from the ______
|
the protrons from the atomic mass
|
|
How do i relate periods to energy levels?
|
each period represents 1 energy level---> one "ring"
|
|
what is in an element key?
Make example of iron |
26 ------atomic number
Fe ------symbol iron-----name 55.847---atomic mass |
|
Electrons out in the furthest enerygy level can be transferred or shaperd and are known as _______
|
velence electrons
|
|
Difference between metals and non-metals
(5) |
Metals_
shiney, bendable, ductile, good conductor, takes electrons Non-Metals_ *ALL OPPOSITE OF METAL* |
|
the _____ is the large group that share characteristics of both metals and non-metals
|
transition metals
|
|
This group of elements is a group of gases that have full outer energy kevels that don't ordinarly form compounds and they are known as ________
|
noble gases
|
|
Describe the location of the metals, non-metals, and metalloids on the periodic table of elements
|
Metals:left and center
Non-MEtals:right Metalloids:around "staircase" |
|
IN the _____ state of matter, atoms are stripped of their electrion
|
plasma
|
|
The suns is made of mostly _____. A _____ is a tremendous elxplostion that breaks apart a massive star, producing temp. up to one million degrees C
|
hydrogen, supernova
|
|
An atom with a differnt number of neutrons than protons
|
Isotope
|