How many Atoms?
H2O contains this many atoms
3
Ice melting into water
Physical
Name the parts of an aqueous solution
Solute
Solvent - water
All together, it is a solution
Carbon Dioxide
Compound
Energy or heat always moves from what to what
Hot to cold
This kind of energy transfer involves direct touch
2NaCl contains this many atoms
4
You have two mystery clear liquids. You place the same third chemical into each. One clear liquid turns pink. The other turns green. Why did this happen?
Unexpected color change - chemical change
What are the three ways that you can increase how much solute a solution can have?
Agitation
Stir
Heat
Neon gas
Element
The three ways energy moves include
Conduction
Convection
Radiation
This type of energy transfer involves movement through gas or liquid.
What is convection?
H2CO3 contains how many atoms
6
A pot boiling water
Physical
In the candy cane lab, this method of increasing the rate of dissolution seemed to be the fastest
What is heat
Water
Compound
It is cold outside. To keep warm, Kevin rubs his hands together. Why do his hands become warmer?
Kevin is creating kinetic energy which is the movement of the molecules.
This type of heat transfer can move in all directions without a medium
What is radiation
Al(NO3)3 contains how many atoms?
13
Name all the way fireworks might demonstrate a chemical change
Light/heat
Unexpected color change
What is another way to say "supersaturated"?
Concentrated or above saturation point
True or False
So is the chemical symbol for Sodium
False
Daily double - Na is Sodium
As heat increases, what happens to kinetic energy?
It also increases.
The heat is on full blast in Ms. Gossett's room because someone broke the temperature sensor. The heat flows from the ceiling vent into the room. What form of heat transfer is this?
Convection
2Ba(OH)2 contains how many atoms?
10
In the "mushroom cloud" lab, what was created and what kind of chemical changes did you see?
Precipitate
Release of gas
Release of heat
What is another way to say "unsaturated"
Diluted or below saturation point
How many substances listed below are only elements:
H2O
Ar
NH4Cl
O3
C8H18
2
A boiling pot of water, when taken off the heat, will eventually cool down until it reaches...
thermal equilibrium (room temperature in this case)
Two days after our artic blast, because it is Texas, it will be hot once again. What form of energy transfer would cause the seat belt buckles to be hot inside a car?
Radiation to heat up the inside of the car
Conduction when someone touches them