Four topics. About school and school subjects. Save the link.

Chemistry

100

0₂ - What is this?

Oxygen

200

HCl - What is the name of this acid?

Hydrochloric acid

300

Name 3 first elements from periodic table

1) H - hydrogen
2) He - helium
3) Li - lithium

400

Equalize reaction

CH₄ + (?)O₂ = CO₂ + (?)H₂O

CH₄ + 2O₂ = CO₂ + 2H₂O

Maths

100

77 + 33 = ?

110

200

2⁵ = ?

32

300

5! = ?

120

400

8 : 2(6 - 2) = ?

16

Biology

100

What is eukaryote?

Cell with nucleus(core)

200

How many percentage of water in human body?

60%

300

How many bones are in the human body?

206

400

What does DNA stands for?

Deoxyribonucleic acid

Geography

100

Name directions of the world

North, East, South, West

200

What is the biggest country in the world?

Russia

300

What is the longest river in the world?

Nile

400

Where are the pyramids located?

In Egypt