This essential gas is important so that we can breath.

• oxygen

• carbon dioxide

• hydrogen

• neon

What’s the boiling point of water?

• 101 degree

• 100 degree

• 120 degree

• 0 degree

Animals that eat both plants and meat are called what?

• herbivores

• Omnivores

• carnivores

How many elements are there in the periodic table?

• 117

• 135

• 120

• 118

Can you hear anything in outer space?

• NO

• YES

the main character of breaking bad was a high school -------- teacher

• physics

• biology

• chemistry

What is the hardest known natural material?

• gold

• diamond

• silver

You can't live without water! What is its chemical formula?

• H2

• H2O

• H2O2

Three of the most common states of matter are solids, liquids, and gases. A liquid has:

• A defined volume, but not a defined shape

• A defined volume and shape

• A definite shape, but no defined volume

------------------مخصماك و ابعد عنى انا مش

• حباك

• محمد محى الشرقلوى

• محى محمد الشرقاوى