Algebra
Chemistry
History
Geometry
Physics
100
(x+4)(x+2)=?
x2+6x+8
100
What color does litmus paper turn when dipped into lemon juice?
red
100
Which ancient civilization built the pyramids of Giza?
The Ancient Egyptians
100
A right triangle has one angle measuring 67 degree. Find the measures of the other two angles?
23 and 90
100
If a car travels 100 meters in 5 seconds, what is its average speed?
20 m/s
200
Lan and Minh sold a bicycle for $240. The buyer asked for a 20% discount. How much does the buyer have to pay after the discount?
240×(1−0.20)=240×0.8=$192
200
What is Ag?
Silver
200
What was the main purpose of the Silk Road?
To trade goods and culture between Asia and Europe
200
A triangle has a based of 7cm and a height of 8cm . What is its area?
28
200
What is the unit of force in the SI system?
Newton
300
3x+5x=?
8x
300
What is HCL? name it clear.
Hydrochloric Acid
300
Who were the leaders of Germany during World War 2?
Adolf Hitler
300
Find ∠xCA, ∠ACy, ∠yCD, ∠DCx
∠xCA= 118° ∠ACy= 62° ∠yCD= 50° ∠DCx= 130°
300
Sound travels fastest through which medium?
Through Solid
400
(3x)2 -(4+6x)62=0
x= -4/3 and x= -4/9
400
C3H8 + O2--> CO2 + H2O? Solve it.
C3H8 + 5O2 --> 3CO2 + 4H2O
400
What event marked the end of World War II in the Pacific?
(Hint: event in a country from Asia)
The atomic bombings of Hiroshima and Nagasaki in August 1945, leading to Japan’s surrender.
400
What is the circumference of a circle with a radius of 7 cm?
43.96
400
If a bulb is connected to a 9 V battery and the resistance is 3 Ω, what is the current through the bulb?
3 A (I = V / R = 9 / 3)
500
A bag contains 20 markers: 3 blue, 5 red, 7 green, 2 pink, 3 black. What is the probability(%) of picking a black or green marker?
30% or 0.3
500
What are the products of this equation? (Balance it)
Cu + AgNO₃ → ???
Cu + 2AgNO3 --> Cu(NO3)2 + 2Ag
500
What international organization was created after World War II to maintain peace?
The United Nations (UN).
500
OK=3cm
CK=4cm
AH=3cm
OH?
4cm
500
What kind of energy is stored in a stretched rubber band?
Elastic potential energy