Elements, compounds and mixtures

What is the symbol of Nitrogen

• N

• F

• Nitrogen

• 2N

What is an element

• An element is an impure substance with same atoms combined in a fixed ratio

• An element is a pure substance made of the same atoms.

• An element is a mixture

• An element is a compound that tell everyone to become atoms

What type of mixture is salt and water

• Homogeneous

• Heterogeneous

• Difficult to make

• Gaseous

How many types of mixture are there

• 8

• 5

• 2

• 7

Symbol of Pottasium

• Na

• H

• Li

• K

Which of the following is a compound

• NaCl

• Na

• Mg

• 3Mg

What is a compound

• 18 atoms and molecules combined to form ice cream

• 2 or more atoms combined in a fixed ratio to form a molecule

• Pure substance

• Be

What is the symbol of Argon

• A

• Au

• Ar

• S

What is the symbol of hydrochloric acid

• HC

• HCL

• Hcl

• HCl

Chemical formula of hydrogen peroxide

• H2O2

• H2CO3