Matter
The 2 subatomic particles found in the nucleus are _______________ and ____________
protons & neutrons
Write the formula for density
Density = mass/volume
___ K + ___ O2 --> ___ K2O
4_ K + ___ O2 ----> _2_ K2O
The smallest unit of life, contained in all matter
Atom
Titanium has how many electrons
22
Provide an example of a physical change and example of a chemical change
Answers will vary
Whenever presented with a cube or a rectangle, in order to find the Volume you must use what formula?
Volume = Length x Width x Height
___ Ag2O ---> ___ Ag + ___ O2
_2_ Ag2O ----> _4_ Ag + ___ O2
The level of compaction of atoms
Density
What are the 6 organic materials found in every living thing?
Nitrogen, Carbon, Hydrogen, Oxygen, Phosphorus, Sulfur
Determine if the following in an atom, molecule, and compound
1.) H12 2.) C3H2O5 3.) Ze6
1. Molecule
2. Compound
3. Molecule
Whenever you need to find the volume of an oddly shaped object you can drop it in water and use what formula?
___ FeCl2+ ___ Cl2 ---> ___ FeCl3
_2_ FeCl2+ ___ Cl2 ----> _2_ FeCl3
The temperature at which an item begins to burn
Flash point
The volume of an object is 2cm3 while the mass is 3 grams.
The density of water is 1g/cm3.
Will this item float or sink?
SINK
I have no fixed shape but a fixed volume... What state of matter am I ?
A liquid
The units for density
g/cm3
___ S8 + ___ O2 ---> ___ SO2
___ S8 + _8_ O2 ----> _8_ SO2
Ability to combust or spontaneously erupt into a fire
Flammability
The number of neutrons for Barium is ......
81
When a solid turns in a gas, the phase change is called ______________
Sublimation
The units for volume
cm3
___ Al + ___ Fe2O3 ----> ___ Fe + ___ Al2O3
_2_ Al + ___ Fe2O3 ------> _2_ Fe + ___ Al2O3
How easily a substance can be dissolved
Solubility
What is the density of a cube that has a length, width, AND height of 2cm and a mass of 18grams.
2.25 g/cm3