Speed/Velocity
What is an example of units for speed?
On the graph, there's a horizontal line, what does this mean?
No motion
___ K + ___ B2O3 ----> ___ K2O + ___ B
6K + 1B2O3 ---> 3K2O + 2B
2 Na + Cl2 → 2 NaCl
Formation/Synthesis/Composition
This type of liquid has a pH of less than 7 and turns litmus paper red.
Acid
What is the speed of an object traveling 300 km for 2.5 hours?
120 km/h
A line is going up at a sharp angle, what does this mean?
The greater the slope, the faster the movement.
___ HCl + ___ NaOH ---> ___ NaCl + ___ H2O
1 HCl + 1 NaOH ---> 1 NaCl + 1 H2O
2 Fe2O3 ---> 4 Fe + 3O2
Decomposition
This type of liquid has a pH of more than 7 and turns litmus paper blue.
Base
The speed of a baseball is 4 m/s and it travelled 20 metres. How long did it take?
5 seconds
True or False: The line is moving down at a sharp angle back towards the starting point, this means the object is slowing down.
False, this means the object is moving back towards the starting point.
___ Na + ___ O2 ---> ___ Na2O
4 Na + 2 O2 ---> 2 Na2O
2 C8H18 + 25 O2 ---> 16 CO2 + 18 H2O
Combustion
What are the names of the chemicals that we start with in a reaction?
Reactants
You drove for 8 hours at 60 km/h. How far did you drive?
480 km
What is usually labeled on the x-axis (bottom) of a displacement-time graph?
Time in seconds
___ C6H6 + ___ O2 ---> ___ CO2 + ___ H2O
2C6H6 + 15O2 ---> 12CO2 + 6 H2O
2 Al + 3 CuCl2 ---> 3 Cu + 2AlCl3
Single Replacement
A unit that also has a direction associated with it. ex. 50 km/h [E]
A vector
A snail travels across the sidewalk and it takes 60 minutes to travel 5 cm. What was the snail's speed in m/s?
0.000014 m/s OR 1.4 x 10-5
To be a true displacement-time graph, what does the distance/displacement need? (think scalar vs vector)
A direction ([N])
___ NH4OH + ___ H3PO4 ---> ___ (NH4)3PO4 + ___ H2O
3 NH4OH + 1 H3PO4 ---> 1 (NH4)3PO4 + 3H2O
2 AgNO3 + K2CrO4 ---> 2 KNO3 + Ag2CrO4
Double Replacement
A unit that does not have a direction. ex. 35 sec
Scalar