All Things Density
Bonds. James Bonds.
Chemical and Physical Changes
Solubility
Pewiodic Table
100
What does the graduated cylinder measure?
volume
100
Is this molecule a polar or non-polar covalent bond?
polar covalent bond
100
Chemical or physical change:
A flask filled with liquid water is heated over a burner to a temperature of 100°C and turns into gas.
Physical
100
What is this separation technique called? 
filtration
100
What element is in group 3 and period 4?
Scandium (Sc)
200
A metal cube has sides measuring 5 cm in length and a mass of 265. What is the density? You must include the unit of measurement!
2.12 g/cm3
200
Which element is the anion?
Chlorine (Cl)
200
Chemical or physical change: Burning a piece of paper.
Chemical
200
KCl and NaCl are the same solubility at what temperature?
30°C
200
True or False: Phosphorous (P) and arsenic (As) have similar chemical properties.
True!
300
What happened to the total mass of a sheet of paper before and after it was cut up to make this paper snowflake?
The mass of the paper was greater before it was all cut up into a snowflake because mass was REMOVED!
300
_____ can be described as a(n) _______ due to its positive charge.
Sodium (Na); cation
300
Is this a chemical or physical change?
Physical
300
70g of KCl is added into a beaker of 100g of water that is heated to a temperature of 40°C. Is the solution saturated, unsaturated, or supersaturated?
Supersaturated.
300
Create a Bohr model for fluorine (F)
400
What is the density of an object with a volume of 16mL and a mass of 48g? You must include the units of measurement!
3 g/mL
400
Oxygen gains two hydrogen atoms. What is oxygen's net charge?
-2
400
Is this a chemical or physical reaction?
Chemical
400
100g of water is heated to a temperature of 70°C. How many grams of KClO3 should be added to result in a saturated solution?
30g
400
Name the 3 subatomic particles and their charges.
Protons = positive
Neutrons = neutral
Electrons = negtaive
500
True/False: The total mass of the substances before they were combined is greater than the total mass of the substances after they were combined.
False! The total mass stays the same.
500
What is the difference between ionic and covalent bonds?
Ionic bonds: electrons are given and gained.
Covalent bonds: electrons are shared.
500
Describe how a chemical reaction occurs.
When bonds are broken and/or new bonds are created. This results in an entirely new substance.
500
A beaker of 100g of water is heated to a temperature of 60°C. How many grams of KClO3 could be added to the beaker to result in an unsaturated solution? (Give any amount that would result in an unsaturated solution!)
0-19g of KClO3
500
What element does the Bohr model represent? 
Sodium (Na)