Why do you use roman numerals when naming an ionic compound?
when the cation can be found in groups 3-12
Heat flows in what direction?
high to low
What is the measure of amount of kinetic energy of particles?
Temperature
What are the products of combustion?
Carbon Dioxide and Water
How does an exothermic reaction make the surface of the object feel? Why?
Hot - because it releases heat
Define ion.
atoms with a different number of electrons - have a positive or negative charge
Why do atoms bond?
stability - to have 8 valence electrons
During conduction, how is energy transferred?
particles collide
Calculate the heat required to head 250 grams of water from 21 C to 53 C. The specific heat capacity of water is 4.18 J/g C.
Use the equation - Q=mC(Temp Final - Temp Initial)
33,440 J
What is deposition?
Gas to a solid
What is sublimation?
solid to a gas
What is defined as matter with a fixed composition?
Substance
List 3 physical properties.
List 3 chemical properties.
Physical Properties: Color, Mass, Boiling Point
Chemical Properties: Ability to Rust, Reactivity, Flammability
If an atom has 20 protons, 20 electrons, and 21 neutrons, what is the mass number? What is the element?
Mass number - 41
Element/Atomic number - Calcium
Define isotope.
atoms with a different number of neutrons and different mass
Can substances be broken down using a physical process? Why?
No
List 3 chemical changes
Rotting
Burning
Rusting
Write the formula for Cobalt (II) Phosphate
Co3(PO4)2
What is the name for the following compound?
Aluminum Sulfide
This is a Bohr diagram for what element? How many protons, neutrons, electrons, and valence electrons does it have?