What is the chemical symbol for Gold?
![]()
Au
What force pulls objects toward the Earth?
Gravity

What organ helps humans breathe?
Lungs

How many states of matter (trạng thái vật chất) are commonly taught in school?
Solid, Liquid, Gas

What unit is used to measure speed?
Metres per second (m/s) or Kilometres per hour (km/h
What is the basic unit of life?
Cell

How many elements are there in the periodic table today?
118

Which Newton law states that for every action, there is an equal and opposite reaction?
Newton's Third Law
Which blood cells help the body fight infections?
White blood cells

Name two Noble Gases (Khí hiếm)?
Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe) và Radon (Rn)

According to Newton's Second Law, if you double the Mass of an object but keep the Force the same, the Acceleration will ....?
Be halved ( Decrease by half / 50% )
Which molecule (phân tử) carries genetic information in living organisms?
DNA
