Final Revision G8 Term 1,2

The first established natural protectorate in Egypt is _________

• petrified forest

• Wadi Hetan

• Ras Mohamed

The scientist ________ discovered the main energy levels of the atom

• Bohr

• Mendleev

• Netwon

All of the following are green house gases EXCEPT ________

• CH₄

• N₂O

• O₂

Metal oxides are ________- oxides

• acidic

• basic

• amphoteric

The elements of group 1A are known as ________

• alkali metals

• halogens

• alkaline Earth metals

All the following elements from metalloids except for ________

• silicon

• bromine

• boron

_________ is considered the midway between horse and zebra

• Quagga

• Bald Eagle

• Panda bear

The snow crystal has ________ shape

• octagonal

• hexagonal

• pentagonal

______ is an example of endangered living organisms

• Mammoth

• Dodo

• Dinosaur

• Bald Eagle

___________ react very slowly with cold water

• K and Na

• Ca and Mg

• Zn and Fe

• Cu and Ag