Distance-Time Graphs
Speed Vs Velocity
Physical or Chemical Change
Random Review
Vocab
100
What does the y-axis display on a distance-time graph?
The distance is object covers.
100
True or False:
Velocity is speed+direction the object is moving.
True
100
True or False:
In a physical change a new substance is formed?
False
100
The solvent in an aqueous solution is________
water
100
Measurement of speed and direction of an object
Velocity
200
How many times were the object at rest? Say the letters that correspond with your answer.
B, D
200
What is the formula for speed?
Distance/Time
200
Gabriel added vinegar to a flask of baking soda during science class. Bubbles of carbon dioxide gas formed as the vinegar and baking soda mixed together. He put a balloon on top of the flask to catch the gas.
Chemical Change
200
Elements are represented by a ________ __________ on the periodic table.
Chemical symbol
200
Measurements, such as minutes and hours, used to quantify intervals, durations, and sequences
Time
300
Where did the graph so a constant speed? Support your answer with corresponding letters
A,C
300
A student who was training for a cross country race jogged for 2.0 hours and covered a distance of 14.0 kilometers. What was the average speed of the student?
7km/hr
300
- An experiment was performed in which a crystalline substance was added to a beaker filled with a liquid at room temperature. The observations made during the experiment were as follows:
- The crystals dissolved.
- A precipitate formed.
- The bottom of the beaker felt warm to the touch.
- Bubbles formed in the water.
Which is a not a chemical change?
1. Crystals dissolved is a physical change
300
What element has the atomic mass of 35.45
Chlorine
300
The total change in position compared to the starting point
Displacement
400
What does letter E show?
The object returning to the starting place/location.
400
A student was riding his skateboard to school. He traveled 200 meters in 40 seconds. What was the student’s average speed in meters per second?
5 m/s
400
Matter changing state(solid, liquid, or gas) is an example of a
Physical Change
400
How many atoms are in the given formula
C2H5OH
9
400
A change that involves one substance being pulled apart or combined with another substance to form a completely different substance or substances
Chemical Change
500
What does a distance-time graph shows?
Total distance covered over a period of time, also we can find the speed the object.
500
- The Valdez family traveled from New York City to Washington, DC. They left at 12:00 p.m., traveled 95 miles, and stopped to eat in Philadelphia. They continued driving another 135 miles and arrived in Washington, DC, at 5:00 p.m.
What was the family’s average speed?
46mph
500
- Priya went with her aunt to watch a fireworks display. She asked her aunt why fireworks react the way they do. Her aunt explained that it is due to a chemical change, and that there are indicators to look for. What evidence is there of a chemical change in the fireworks?
Select three correct answers.
- Size of the firework
- Temperature change
- Movement of the firework
- Light production
- Color change
Temperature Change, Light Production, Color Change
500
How many elements are in the given formula
CH3COOH
3
C,H,O
500
A characteristic that can be observed or measured without changing the substance
Physical Property