Compounds and Chemical formulas

Carbon monoxide is made of one carbon atom and one oxygen atom. What is it's chemical formula?

• CO

• CO2

• C1O1

• C202

How any hydrogen atoms are in water? (H2O)

• 1

• 2

• 3

• 4

Carbon dioxide has the chemical formula CO2. How many carbon and oxygen atoms are in carbon dioxide?

• 1 carbon, 1 oxygen

• 2 carbon, 1 oxygen

• 1 carbon, 2 oxygen

• 2 carbon, 2 oxygen

Identifiy the elements in iron bromide.

• Iron and iodine

• Iron and flourine

• Iron and chlorine

• Iron and bromine

Identify the compound in the list below

• Carbon dioxide

• Oxygen

• Carbon

• Salt and water

How many carbon atoms are in glucose? (C6H12O6)

(a)  

Lithium bromide is made of two elements. Lithium and?

(a)  

Magnesium was burned in oxygen. Write down the name of the compound formed.

(a)  

Sodium hydroxide is made of three elements. Sodium, hydrogen and ?

(a)  

Glucose has the formula C6H12O6. What is the ratio of hydrogen to oxygen atoms?

• 1:1

• 1:2

• 2:1

• 2:2