7.6 D
7.6 E
7.7 A
7.7 B
7.7 C
100
What do we call the part of a solution that gets dissolved?
What do we call the part of a solution that does the dissolving?
Solute - Dissolved
Solvent - Dissolving
100
When you agitate a solution it makes it dissolve _______.
Faster
100
What is the formula for calculating speed?
Speed equals Distance/Time
100
What does velocity always have?
A Speed with a Direction
100
When is the object At Rest
R and S
200
Adding more water to Kool-Aid makes it weaker. What word describes this?
Dilution
200
Which of these has a faster rate of dissolution? Why?
The granulated sugar. Surface Area
200
A car goes 100 km in 2 hours. What is its average speed?
50 km/h
200
If Altuve hits a home run and touches all the bases to come back to home plate and score, what is his displacement?
0
200
What is happening in this motion graph
The object is speeding up or accelerating
300
Which solution is the most concentrated?
5
300
What are the 3 main factors of the Rate of Dissolution?
Temperature, Surface Area, and Agitation
300
A student recorded the distance a bus traveled each hour of a trip:
Time Distance (km)
First hour 50
Second hour 40
Third hour 30
The trip took 3 hours. What was the bus’s average speed?
40 km/h
300
Two cars drive at 30 mph. One goes east, the other west. Do they have the same velocity?
No
300
What does this graph represent
Constant Speed
400
A student mixes Gatorade powder with water. It tastes too strong. How they can dilute it and what happens to the concentration?
Add more water (solvent), it will decrease the concentration.
400
A student drops three sugar cubes into three cups of water:
Cup A: hot water, stirred
Cup B: hot water, not stirred
Cup C: cold water, stirred
Which cup will dissolve the sugar cubes the fastest, and why?
Cup A, because higher temperature and stirring both increase the rate of dissolution
400
A bus traveled 120 kilometers in 2 hours, stopped for half an hour, and then traveled 60 kilometers in 1.5 hours. What was the bus’s average speed for the entire trip (including the stop)?
45 km/h
400
Which of the following is velocity and not speed?
A. 5 m/s
B. 50 km/h
C. 10 m/s east
D. 30
C. 10 m/s east
400
Which point represents 1 meter per second
D
500
Mr. Brown stirs sugar into iced tea until no more sugar will dissolve and some sits at the bottom of the glass. What type of solution has he made?
A saturated solution
500
A student tries to dissolve sugar in four different cups of water.
Cup A: cold water, whole cube, not stirred
Cup B: warm water, whole cube, stirred
Cup C: cold water, crushed sugar, stirred
Cup D: warm water, crushed sugar, stirred
Which cup dissolves the sugar the fastest, and why?
Cup D, because warm water, crushed sugar, and stirring all increase the rate of dissolving
500
A student recorded how far her family drove on a Saturday outing. The data table shows the trip:
Trip Distance (km) Time (hours)
Home to the zoo 12 0.40
Zoo to the park 8 0.25
Park to the restaurant 10 0.50
What were the average speeds (in km/hr) for each part of the trip?
30 km/h
32 km/h
20 km/h
500
Who had the same velocity? Who had the same speed?
Velocity-Ellen and Deidre
Speed-Melissa and Ellen
500
What is happening to the object in this graph at 12:30
It is reversing direction and ends up back at its starting point.