Elements & Compounds
Physical & Chemical Changes
Aqueous Solutions
Speed & Velocity
Miscellaneous
100
A pure substance composed of the same type of atom throughout
Element
100
A change that involves one substance being pulled apart or combined with another substance to form a completely different substance or substances
Chemical Change
100
What is the solute and the solvent?
Solute - Sugar
Solvent - Water
100
What is the difference between speed and velocity?
Velocity is speed but with a direction
100
243 m/s
377 mi/min
453 m/s East
63 m/hr
Which does not belong? Why?
453 m/s East, only velocity
200
A new substance with unique chemical and physical properties formed when two or more elements are chemically bonded during a chemical reaction
Compound
200
A characteristic that can be observed or measured without changing the substance
Physical Property
200
The speed at which the solute spreads out uniformly into the solvent.
Rate of dissolution
200
What is the formula for speed?
S = d/t
200
What is on the X and Y axis of a distance v. time graph?
X axis - Time
Y axis - Distance
300
What is the chemical symbol and atomic number for oxygen
O and 8
300
A characteristic that can be observed or measured only when atoms rearrange during a chemical change
Chemical Property
300
Mr. Ramirez got a sweet tea from Whataburger, it was way too sweet and he wants to dilute it. How can he do that?
Adding more water
300
A soccer ball is traveling at a rate of 10 m/s and then is kicked again at a speed of 10 m/s. The diagram below shows the direction the ball is moving before and after the second kick. Which of the following statements correctly identifies what is happening to the speed and velocity of the soccer ball?
Speed - constant
Velocity - Changing
300
Find average speed using the graph.
2 m/s
400
Ag
NH3
He
Cu
H2
Which does not belong? Why?
NH3
400
What are the 6 evidences of chemical change?
Color Change, Gas production, Light production, Temperature Change, Precipitate, Odor
400
What is the universal solvent?
Water
400
Mr. Ramirez can run 20 m/s, how far can he run in 6 seconds?
120 m
400
A runner timed their speed for 3 different test. Their data is shown below.
What is the average speed of the runner?
4 m/s
500
H2SO4
How many total atoms?
How many elements? and how many of each?
7 Total Atoms
Hydrogen - 2, Sulfur -1, Oxygen - 4
500
Explain the type of changes that occur when cutting a piece of paper up into tiny pieces and then using those pieces in a fireplace.
Cutting into pieces - Physical
Using them as fire - Chemical
500
What are three ways to increase the rate of dissolution
Agitation, Increase temperature, Increase surface area
500
What is the average speed of the fastest track? Round to the nearest whole number.
200 m/min
500
Where is there no motion occurring on the following graph?
Section B