Unit 0
A chocolate chip cookie is a ______ mixture.
what is heterogeneous?
What is quantitative?
Name this subatomic particle: has a mass of 1, lives inside the nucleus, has a neutral charge.
What is a neutron?
This is the group on the PT that forms a -1 ion.
What is the halogens?
In an ionic bond, electrons are being ________.
What is transferred?
Give me two examples of a physical change.
Possible answers: any phase change, cutting/bending things, dissolving.
0.00010 has this many... sig figs for honors OR certain digits for CP1.
Honors = 2 sig figs
CP1 = 5 certain digits
A positive ion is called a ______ and a negative ion is called a _________
What is a cation and anion?
The noble gases are nonreactive because they always have these two sub-levels filled with electrons (Helium is an exception here).
What are s & p?
Give me 2 properties of ionic compounds.
Possible answers: high MP/BP, soluble in water, good conductors when dissolved, crystalline structure, strong attractive forces, hard & brittle.
What are freezing, condensation, and deposition?
Titanium-50 has ___ protons, ___ neutrons, and ___ electrons.
What is 22, 28, and 22?
This is the element on the PT with the smallest atomic radius.
What is helium?
In FeP, Iron has a charge of ____.
Classification of matter: CO2 is a _______. (be specific!)
What is a compound?
Is this true or false: When a piece of paper is burned, the products of the reaction will weigh less than the starting materials.
What is false, per the law of conservation of mass?
These are the THREE rules of drawing orbital diagrams.
1. fill lowest energy level first
2. have opposite spins
3. spread out before doubling up
When an atom becomes an anion, the atomic radius gets ______.
What is bigger?
This is the name of Co2S.
What is cobalt (I) sulfide?
Describe the motion, position, and attraction of the particles in a gas.
Moving fast, random, fills up shape of container, weak forces.
Find the mass of a liquid with a density of 1.25 g/mL and a volume of 7.3 mL.
What is 9.1 grams?
This is the electron configuration of Yttrium (Y).
What is 1s22s22p63s23p64s23d104p65s24d1?
Describe the electronegativity of the noble gases.
They don't bond, so they don't have any measure of electronegativity.
This is the formula for ammonium sulfate.
What is (NH4)2SO4?