Section 1 and 2
How many atoms of each element are in the following compound: (NH4)2CO3?
N: 2 atoms
H: 8 atoms
C: 1 atom
C: 3 atoms
Which of the following types of mixtures is a heterogeneous mixture?
1. suspension
2. solution
3. colloid
1. Suspension
Define water displacement
A known water level is measured, an object of irregular shape is place in the water, and the new water level is recorded. The difference between the starting water level an the ending water level will tell you the volume of the object.
Luster
ductile
conductive
reactive
malleable
Define a Polymer and hydrocarbon
A long compound composed of many monomers linked together
Hydrocarbon: molecule made of only hydrogen and carbon
What is the law that has to be followed during a chemical reaction?
Law of Conservation of Mass
When light shines through fog and you can see the light hit the particles that are throughout the air, what is this called?
Tyndall Effect
What is the mass of an object if its density is 45.0g/mL and its volume is 3.0mL?
135g
What is an alloy?
A substance that has properties of a metal but is made up of a mixture of elements. Example: brass
Organic Chemistry is the study of what element?
Carbon
What elements naturally are found as diatomic elements?
Hydrogen
Nitrogen
Fluorine
Oxygen
Iodine
Chlorine
Bromine
When you dissolve sugar in water, which part of the solution is the solute?
Sugar: solute
Water: Solvent
Draw the triangle we use to help solve for density, mass and volume
Name an element that is a metalloid
Boron
If you are given 0.75 grams of Lithium, how many moles would you have?
0.75 grams of Lithium=0.1071 moles of Lithium
Define temperature.
The average kinetic energy of a substance
REVIEW: What cannot be broken down into smaller means?
1. NaCl
2. AgNO3
3. O2
4. CO2
3. O2
Density is the direct relationship between mass and volume, when one goes down so does the other.
The periodic table is mostly composed of __________
1. metals
2. nonmetals
3. metalloids
1. metals
Define Non-Newtonian substance
a substance that is not a solid or a liquid but somewhere in-between.
When snow goes through sublimation and goes from a solid to a gas, what happens to the temperature?
The temperature remains the same.
F.A.R.T.S.
Fizzing, aroma, replacement, temperature, substance
How many sig. figs. is: 5960.5000
8
What type of reaction occurs when an element is more reactive than part of the compound it is mixed with?
Solve:
Li + AgCl -->
Single Replacement Reaction
Li + AgCl --> Ag + LiCl
Name one natural polymer and one synthetic
Natural: silk, wool, wood, DNA, cellulose, proteins
Synthetic: plastic, polyester, micro-plastics, stitches, paint, sneaker rubber