Show:
Atoms
Ionic compounds
Covalent Compounds
Metallic Compounds
Mystery
100
Atoms are composed of these 3 subatomic particles?
protons, neutrons, and electrons
100
What is an ion?
An element with a charge
100
What is a covalent compound?
A compound made of 2 or more nonmetals that share valence electrons
100
Metallic compounds are made of other this type of element...
metals
100
Two hydrogen atoms and one oxygen atom make up one molecule of what compound?
Water
200
Particle with a neutral charge in an atom.
neutron
200
What are the two types of Ions?
Cations (+) and Anions (-)
200
What is electronegativity? Do nonmetals have low or high electronegativity?
Electronegativity describes how strongly an atoms attracts electrons. Nonmetals have HIGH electronegativity values.
200
Metals have (blank) electronegativity values
low
200
The three types of radioactive decay are...
alpha, beta, and gamma decay
300
name for the Center of the atom that makes up most of the atom's mass.
nucleus
300
How does an atom become a cation?
This happens when an atom loses electrons. OR When an atom has more protons than electrons.
300
Why do two nonmetals share valence electrons?
two get fulls shells and become more stable OR because they both have high electronegativity values and fight over the valence electrons
300
What type of bond holds together metallic compounds?
metallic bond
300
what is a polyatomic ion?
a compound with an overall net charge
400
Particles located in the nucleus of an atom.
protons and neutrons
400
How do ionic compounds form? Must include... - what types of elements are involved - how the atoms become ions - how the bond forms
Ionic Compounds form when nonmetal atoms steal electrons from metal atoms. The nonmetal becomes negatively charged and the metal becomes positively charged. The metal becomes positively charged. The opposite charged ions stick together and bond.
400
Draw the molecule NH3
drawing on board
400
What happens to the valence electrons when metals form compounds?
the metal gives away its extra electrons to the "sea of electrons"
400
The type of reaction that occurs in nuclear reactors... (double points if you remember the isotope used in nuclear reactors)
fission of Uranium-236
500
The name of the two forces that occur in the nucleus. One holds it together, one pushes outwards.
Electrostatic Force and Nuclear Force
500
What is the Formula of the compound created by Calcium and Phosphorus.
Ca3P2
500
Is H20 polar or nonpolar? how do you know?
use drawing, not symmetric --> one side pulls stronger than other = POLAR
500
Why do metallic compounds play "hot potato" with the valence electrons
metals have low electronegativity values and want to get rid of their electrons to become stable
500
Draw the polyatomic ion (NH4)+
drawing on board