compound formula and ratio

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

• CO

• CO2

• C1O1

• C202

How many 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

How many carbon atoms are in glucose? (C6H12O6)

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

• 1:1

• 1:2

• 2:1

• 2:2

Carbon dioxide is a compound.

How many elements are present in this compound?

• One

• Two

• Three

Hydrogen nitrate is a compound.

How many elements are present in this compound?

• 1

• 2

• 3

• 4

• 5

Sodium oxide is a compound.

What elements are present in this compound?

• sodium and oxide

• sodium and oxygen

Silicon dioxide is a compound.

What elements are present in this compound?

• silicon and dioxide

• silicon and oxide

• silicon and oxygen