Chapter 1 ) atoms, elements, compounds. Flashcards
What are the 7 categories on the periodic table
Alkali metals
alkali earth metals,
noble gasses,
halogens,
metals,
nonmetals,
metallodis
What did niels bohr do?
Proposed that electrons are found in energy
What did Dalton do?
Concluded all atoms cannot be made nor destroyed
In bohrns energy levels how much can the 3 hold
Level 1 - 2
Level 2 - 8
Level 3 - 8
What is an mixture
Mixtures are physical combinations of two or more elements and/or compounds.
What is a pure substance
contain only one kind of particle
In the nuclear notion Atomic number is the same as ________
Protons
In nuclear notion the mass number is the total amount of ______and _________
Protons and neutrons
definition of Ionic compounds
Form when metal reacts with non metal
Molecular compounds definition
Form when non-metal atoms share one or more electrons in covenant bond
What is the Valence energy level
The outer most level of an atom
Binary compound
Ionic compound with 2 elements
In a molecular compound do they share or give electrons
They share
In ionic compounds do they share or give electrons
Give
Ion charge definition
It is if you need to take away or add protons so it’s 2, 10 or 18
