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Q 1/15
Score 0
Which compounds have the same number of oxygen atoms?
60
Compounds A, B and D
Compounds B and C only
Compounds A and B only
Compounds C and D only
Q 2/15
Score 0
When a silver spoon reacts with the sulfur-containing compounds present in food, tarnish or silver sulfide is formed. It is a black substance that coats the surface of the silver spoon. Which of the following is evidence that a chemical reaction has occurred?
60
Temperature changed.
Color changed.
Gas formed.
Solid precipitate formed.
15 questions
Q.
Which compounds have the same number of oxygen atoms?
1
60 sec
Q.
When a silver spoon reacts with the sulfur-containing compounds present in food, tarnish or silver sulfide is formed. It is a black substance that coats the surface of the silver spoon. Which of the following is evidence that a chemical reaction has occurred?
2
60 sec
Q.
Digestion is both a physical and chemical. Which of the following digestive processes is a physical change?
3
60 sec
Q.
How is the acceleration of the box best described?
4
120 sec
Q.
How is the acceleration of the box best described?
5
120 sec
Q.
Which types of forces act on the leaves as they fall towards the ground?
6
45 sec
Q.
As the girl jumps towards the east, in which direction does the boat move?
7
45 sec
Q.
What do you have to do to exert an upward force on Box B?
8
120 sec
Q.
Given the data above, how much mass does the object has? Check your pink aid for the formula.
9
120 sec
Q.
At which point does the marble experience balanced force?
10
30 sec
Q.
How is the motion best described through this motion graph?
11
45 sec
Q.
What is the missing mass of water?
12
60 sec
Q.
Read the question and analyze the graph. Answer below.
